/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Ackermann04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:14:21,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:14:21,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:14:21,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:14:21,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:14:21,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:14:21,148 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:14:21,151 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:14:21,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:14:21,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:14:21,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:14:21,159 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:14:21,159 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:14:21,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:14:21,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:14:21,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:14:21,169 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:14:21,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:14:21,172 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:14:21,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:14:21,181 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:14:21,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:14:21,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:14:21,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:14:21,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 16:14:21,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:14:21,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:14:21,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:14:21,217 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 [2020-08-18 16:14:21,264 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:14:21,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:14:21,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:14:21,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:14:21,266 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:14:21,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:14:21,267 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:14:21,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:14:21,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:14:21,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:14:21,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:14:21,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:14:21,268 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:14:21,268 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:14:21,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:14:21,269 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:14:21,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:14:21,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:14:21,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:14:21,270 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:14:21,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:14:21,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:14:21,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:14:21,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:14:21,272 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:14:21,272 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:14:21,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:14:21,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:14:21,273 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:14:21,273 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true [2020-08-18 16:14:21,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:14:21,619 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:14:21,623 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:14:21,624 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:14:21,625 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:14:21,626 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Ackermann04.c [2020-08-18 16:14:21,691 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37862de9c/0ee3db795bcd4f9696077841c4475ce7/FLAG96f53199a [2020-08-18 16:14:22,153 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:14:22,153 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Ackermann04.c [2020-08-18 16:14:22,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37862de9c/0ee3db795bcd4f9696077841c4475ce7/FLAG96f53199a [2020-08-18 16:14:22,556 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37862de9c/0ee3db795bcd4f9696077841c4475ce7 [2020-08-18 16:14:22,566 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:14:22,568 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:14:22,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:14:22,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:14:22,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:14:22,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:14:22" (1/1) ... [2020-08-18 16:14:22,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@532b1c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:14:22, skipping insertion in model container [2020-08-18 16:14:22,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:14:22" (1/1) ... [2020-08-18 16:14:22,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:14:22,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:14:22,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:14:22,792 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:14:22,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:14:22,822 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:14:22,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:14:22 WrapperNode [2020-08-18 16:14:22,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:14:22,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:14:22,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:14:22,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:14:22,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:14:22" (1/1) ... [2020-08-18 16:14:22,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:14:22" (1/1) ... [2020-08-18 16:14:22,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:14:22" (1/1) ... [2020-08-18 16:14:22,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:14:22" (1/1) ... [2020-08-18 16:14:22,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:14:22" (1/1) ... [2020-08-18 16:14:22,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:14:22" (1/1) ... [2020-08-18 16:14:22,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:14:22" (1/1) ... [2020-08-18 16:14:22,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:14:22,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:14:22,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:14:22,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:14:22,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:14:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:14:22,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:14:22,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:14:22,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2020-08-18 16:14:22,998 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:14:22,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:14:22,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:14:22,999 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2020-08-18 16:14:22,999 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:14:22,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:14:22,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:14:23,207 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:14:23,207 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 16:14:23,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:14:23 BoogieIcfgContainer [2020-08-18 16:14:23,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:14:23,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:14:23,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:14:23,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:14:23,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:14:22" (1/3) ... [2020-08-18 16:14:23,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7120fe6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:14:23, skipping insertion in model container [2020-08-18 16:14:23,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:14:22" (2/3) ... [2020-08-18 16:14:23,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7120fe6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:14:23, skipping insertion in model container [2020-08-18 16:14:23,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:14:23" (3/3) ... [2020-08-18 16:14:23,220 INFO L109 eAbstractionObserver]: Analyzing ICFG Ackermann04.c [2020-08-18 16:14:23,231 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:14:23,238 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:14:23,252 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:14:23,273 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:14:23,274 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:14:23,274 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:14:23,274 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:14:23,274 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:14:23,274 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:14:23,275 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:14:23,275 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:14:23,291 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-08-18 16:14:23,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-18 16:14:23,298 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:14:23,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:14:23,299 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:14:23,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:14:23,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1796234678, now seen corresponding path program 1 times [2020-08-18 16:14:23,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:14:23,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436867629] [2020-08-18 16:14:23,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:14:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:23,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:14:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:23,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:14:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:23,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:14:23,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436867629] [2020-08-18 16:14:23,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:14:23,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:14:23,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152656156] [2020-08-18 16:14:23,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:14:23,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:14:23,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:14:23,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:14:23,563 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2020-08-18 16:14:23,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:14:23,698 INFO L93 Difference]: Finished difference Result 55 states and 77 transitions. [2020-08-18 16:14:23,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:14:23,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-08-18 16:14:23,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:14:23,714 INFO L225 Difference]: With dead ends: 55 [2020-08-18 16:14:23,714 INFO L226 Difference]: Without dead ends: 28 [2020-08-18 16:14:23,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:14:23,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-18 16:14:23,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-08-18 16:14:23,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-18 16:14:23,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2020-08-18 16:14:23,772 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 15 [2020-08-18 16:14:23,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:14:23,772 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2020-08-18 16:14:23,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:14:23,773 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2020-08-18 16:14:23,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-18 16:14:23,775 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:14:23,776 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:14:23,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:14:23,777 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:14:23,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:14:23,777 INFO L82 PathProgramCache]: Analyzing trace with hash -895156504, now seen corresponding path program 1 times [2020-08-18 16:14:23,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:14:23,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202241414] [2020-08-18 16:14:23,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:14:23,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:23,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:14:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:23,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:14:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:23,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:23,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:23,915 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-18 16:14:23,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202241414] [2020-08-18 16:14:23,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:14:23,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-18 16:14:23,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762640947] [2020-08-18 16:14:23,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 16:14:23,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:14:23,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 16:14:23,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:14:23,920 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 6 states. [2020-08-18 16:14:24,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:14:24,146 INFO L93 Difference]: Finished difference Result 43 states and 60 transitions. [2020-08-18 16:14:24,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 16:14:24,148 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-08-18 16:14:24,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:14:24,151 INFO L225 Difference]: With dead ends: 43 [2020-08-18 16:14:24,151 INFO L226 Difference]: Without dead ends: 39 [2020-08-18 16:14:24,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:14:24,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-08-18 16:14:24,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-08-18 16:14:24,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-18 16:14:24,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 56 transitions. [2020-08-18 16:14:24,181 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 56 transitions. Word has length 22 [2020-08-18 16:14:24,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:14:24,182 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 56 transitions. [2020-08-18 16:14:24,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 16:14:24,183 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 56 transitions. [2020-08-18 16:14:24,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-18 16:14:24,189 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:14:24,190 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:14:24,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:14:24,193 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:14:24,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:14:24,193 INFO L82 PathProgramCache]: Analyzing trace with hash 687949058, now seen corresponding path program 2 times [2020-08-18 16:14:24,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:14:24,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705380139] [2020-08-18 16:14:24,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:14:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:24,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:14:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:24,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:14:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:24,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:24,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:24,345 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 16:14:24,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705380139] [2020-08-18 16:14:24,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:14:24,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-08-18 16:14:24,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498994394] [2020-08-18 16:14:24,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:14:24,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:14:24,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:14:24,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:14:24,348 INFO L87 Difference]: Start difference. First operand 39 states and 56 transitions. Second operand 4 states. [2020-08-18 16:14:24,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:14:24,413 INFO L93 Difference]: Finished difference Result 74 states and 133 transitions. [2020-08-18 16:14:24,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 16:14:24,414 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-08-18 16:14:24,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:14:24,419 INFO L225 Difference]: With dead ends: 74 [2020-08-18 16:14:24,420 INFO L226 Difference]: Without dead ends: 43 [2020-08-18 16:14:24,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:14:24,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-18 16:14:24,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-18 16:14:24,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-18 16:14:24,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 66 transitions. [2020-08-18 16:14:24,453 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 66 transitions. Word has length 29 [2020-08-18 16:14:24,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:14:24,454 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 66 transitions. [2020-08-18 16:14:24,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:14:24,455 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 66 transitions. [2020-08-18 16:14:24,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-18 16:14:24,460 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:14:24,460 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:14:24,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:14:24,461 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:14:24,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:14:24,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1711672813, now seen corresponding path program 1 times [2020-08-18 16:14:24,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:14:24,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131066155] [2020-08-18 16:14:24,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:14:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:24,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:14:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:24,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:14:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:24,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:24,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:24,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:24,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:24,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:24,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:14:24,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:24,605 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-08-18 16:14:24,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131066155] [2020-08-18 16:14:24,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:14:24,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-18 16:14:24,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394698428] [2020-08-18 16:14:24,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:14:24,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:14:24,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:14:24,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:14:24,608 INFO L87 Difference]: Start difference. First operand 43 states and 66 transitions. Second operand 5 states. [2020-08-18 16:14:24,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:14:24,689 INFO L93 Difference]: Finished difference Result 47 states and 69 transitions. [2020-08-18 16:14:24,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:14:24,689 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-08-18 16:14:24,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:14:24,692 INFO L225 Difference]: With dead ends: 47 [2020-08-18 16:14:24,692 INFO L226 Difference]: Without dead ends: 43 [2020-08-18 16:14:24,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:14:24,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-18 16:14:24,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-18 16:14:24,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-18 16:14:24,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 65 transitions. [2020-08-18 16:14:24,705 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 65 transitions. Word has length 42 [2020-08-18 16:14:24,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:14:24,705 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 65 transitions. [2020-08-18 16:14:24,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:14:24,706 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 65 transitions. [2020-08-18 16:14:24,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-18 16:14:24,708 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:14:24,709 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:14:24,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:14:24,709 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:14:24,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:14:24,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1732137516, now seen corresponding path program 2 times [2020-08-18 16:14:24,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:14:24,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328556092] [2020-08-18 16:14:24,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:14:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:24,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:14:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:24,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:14:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:24,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:24,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:24,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:24,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:24,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:24,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:14:24,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:24,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:14:24,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:25,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:25,023 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 54 proven. 29 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-08-18 16:14:25,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328556092] [2020-08-18 16:14:25,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:14:25,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 16:14:25,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031786397] [2020-08-18 16:14:25,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 16:14:25,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:14:25,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 16:14:25,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:14:25,026 INFO L87 Difference]: Start difference. First operand 43 states and 65 transitions. Second operand 14 states. [2020-08-18 16:14:26,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:14:26,015 INFO L93 Difference]: Finished difference Result 166 states and 476 transitions. [2020-08-18 16:14:26,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-18 16:14:26,020 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2020-08-18 16:14:26,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:14:26,034 INFO L225 Difference]: With dead ends: 166 [2020-08-18 16:14:26,034 INFO L226 Difference]: Without dead ends: 131 [2020-08-18 16:14:26,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=270, Invalid=990, Unknown=0, NotChecked=0, Total=1260 [2020-08-18 16:14:26,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-08-18 16:14:26,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 69. [2020-08-18 16:14:26,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-18 16:14:26,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 133 transitions. [2020-08-18 16:14:26,080 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 133 transitions. Word has length 62 [2020-08-18 16:14:26,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:14:26,081 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 133 transitions. [2020-08-18 16:14:26,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 16:14:26,081 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 133 transitions. [2020-08-18 16:14:26,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-18 16:14:26,085 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:14:26,085 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 8, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:14:26,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:14:26,086 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:14:26,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:14:26,086 INFO L82 PathProgramCache]: Analyzing trace with hash -599460358, now seen corresponding path program 3 times [2020-08-18 16:14:26,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:14:26,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212638685] [2020-08-18 16:14:26,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:14:26,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:14:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:14:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:14:26,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:14:26,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:14:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:14:26,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,289 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 36 proven. 62 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2020-08-18 16:14:26,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212638685] [2020-08-18 16:14:26,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:14:26,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-18 16:14:26,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993770680] [2020-08-18 16:14:26,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 16:14:26,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:14:26,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 16:14:26,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:14:26,292 INFO L87 Difference]: Start difference. First operand 69 states and 133 transitions. Second operand 6 states. [2020-08-18 16:14:26,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:14:26,397 INFO L93 Difference]: Finished difference Result 113 states and 272 transitions. [2020-08-18 16:14:26,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 16:14:26,398 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2020-08-18 16:14:26,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:14:26,402 INFO L225 Difference]: With dead ends: 113 [2020-08-18 16:14:26,402 INFO L226 Difference]: Without dead ends: 109 [2020-08-18 16:14:26,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:14:26,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-08-18 16:14:26,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-08-18 16:14:26,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-08-18 16:14:26,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 267 transitions. [2020-08-18 16:14:26,441 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 267 transitions. Word has length 95 [2020-08-18 16:14:26,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:14:26,443 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 267 transitions. [2020-08-18 16:14:26,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 16:14:26,443 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 267 transitions. [2020-08-18 16:14:26,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-08-18 16:14:26,451 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:14:26,451 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 18, 11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:14:26,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:14:26,451 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:14:26,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:14:26,453 INFO L82 PathProgramCache]: Analyzing trace with hash -319737770, now seen corresponding path program 4 times [2020-08-18 16:14:26,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:14:26,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [150755340] [2020-08-18 16:14:26,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:14:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:14:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:14:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:26,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:14:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:14:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:14:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 16:14:26,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 16:14:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:14:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:26,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:14:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:14:26,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:26,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:26,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:27,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-18 16:14:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:27,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:27,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:27,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:27,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:27,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:14:27,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:27,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:27,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:27,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2013 backedges. 357 proven. 631 refuted. 0 times theorem prover too weak. 1025 trivial. 0 not checked. [2020-08-18 16:14:27,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [150755340] [2020-08-18 16:14:27,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:14:27,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 16:14:27,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598584910] [2020-08-18 16:14:27,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:14:27,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:14:27,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:14:27,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:14:27,151 INFO L87 Difference]: Start difference. First operand 109 states and 267 transitions. Second operand 9 states. [2020-08-18 16:14:27,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:14:27,378 INFO L93 Difference]: Finished difference Result 189 states and 559 transitions. [2020-08-18 16:14:27,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 16:14:27,379 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 201 [2020-08-18 16:14:27,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:14:27,381 INFO L225 Difference]: With dead ends: 189 [2020-08-18 16:14:27,381 INFO L226 Difference]: Without dead ends: 73 [2020-08-18 16:14:27,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:14:27,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-08-18 16:14:27,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-08-18 16:14:27,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-08-18 16:14:27,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 114 transitions. [2020-08-18 16:14:27,398 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 114 transitions. Word has length 201 [2020-08-18 16:14:27,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:14:27,398 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 114 transitions. [2020-08-18 16:14:27,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:14:27,399 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 114 transitions. [2020-08-18 16:14:27,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 16:14:27,400 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:14:27,400 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 9, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:14:27,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 16:14:27,401 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:14:27,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:14:27,401 INFO L82 PathProgramCache]: Analyzing trace with hash -2010206023, now seen corresponding path program 5 times [2020-08-18 16:14:27,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:14:27,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995665301] [2020-08-18 16:14:27,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:14:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:27,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:14:27,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:27,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:14:27,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:27,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:27,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:27,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:27,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:27,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:27,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:27,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:27,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:14:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:27,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:14:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:27,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:27,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:27,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:14:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:27,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 16:14:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:27,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:27,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:27,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:27,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:14:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:27,755 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 163 proven. 147 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2020-08-18 16:14:27,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995665301] [2020-08-18 16:14:27,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:14:27,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 16:14:27,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141804967] [2020-08-18 16:14:27,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 16:14:27,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:14:27,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 16:14:27,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:14:27,758 INFO L87 Difference]: Start difference. First operand 73 states and 114 transitions. Second operand 16 states. [2020-08-18 16:14:28,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:14:28,649 INFO L93 Difference]: Finished difference Result 181 states and 380 transitions. [2020-08-18 16:14:28,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 16:14:28,650 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 108 [2020-08-18 16:14:28,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:14:28,655 INFO L225 Difference]: With dead ends: 181 [2020-08-18 16:14:28,655 INFO L226 Difference]: Without dead ends: 116 [2020-08-18 16:14:28,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=382, Invalid=1424, Unknown=0, NotChecked=0, Total=1806 [2020-08-18 16:14:28,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-08-18 16:14:28,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 81. [2020-08-18 16:14:28,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-08-18 16:14:28,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 126 transitions. [2020-08-18 16:14:28,690 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 126 transitions. Word has length 108 [2020-08-18 16:14:28,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:14:28,691 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 126 transitions. [2020-08-18 16:14:28,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 16:14:28,691 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 126 transitions. [2020-08-18 16:14:28,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-18 16:14:28,695 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:14:28,695 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 11, 8, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:14:28,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 16:14:28,696 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:14:28,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:14:28,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1835077495, now seen corresponding path program 6 times [2020-08-18 16:14:28,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:14:28,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444879085] [2020-08-18 16:14:28,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:14:28,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:28,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:14:28,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:28,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:14:28,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:28,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:28,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:28,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:28,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:28,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:28,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:28,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:28,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:14:28,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:28,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:14:28,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:29,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:29,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:29,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:29,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:29,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:29,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:29,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:14:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:29,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 16:14:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:29,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 16:14:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:29,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:29,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:29,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:29,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:14:29,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:29,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 16:14:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:29,146 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 153 proven. 289 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2020-08-18 16:14:29,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444879085] [2020-08-18 16:14:29,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:14:29,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 16:14:29,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525480284] [2020-08-18 16:14:29,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 16:14:29,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:14:29,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 16:14:29,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:14:29,156 INFO L87 Difference]: Start difference. First operand 81 states and 126 transitions. Second operand 16 states. [2020-08-18 16:14:30,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:14:30,133 INFO L93 Difference]: Finished difference Result 213 states and 430 transitions. [2020-08-18 16:14:30,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-08-18 16:14:30,136 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 134 [2020-08-18 16:14:30,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:14:30,139 INFO L225 Difference]: With dead ends: 213 [2020-08-18 16:14:30,139 INFO L226 Difference]: Without dead ends: 131 [2020-08-18 16:14:30,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=479, Invalid=1777, Unknown=0, NotChecked=0, Total=2256 [2020-08-18 16:14:30,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-08-18 16:14:30,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 96. [2020-08-18 16:14:30,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-18 16:14:30,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 151 transitions. [2020-08-18 16:14:30,157 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 151 transitions. Word has length 134 [2020-08-18 16:14:30,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:14:30,158 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 151 transitions. [2020-08-18 16:14:30,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 16:14:30,158 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 151 transitions. [2020-08-18 16:14:30,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-08-18 16:14:30,160 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:14:30,160 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 13, 10, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:14:30,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 16:14:30,161 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:14:30,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:14:30,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1434361927, now seen corresponding path program 7 times [2020-08-18 16:14:30,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:14:30,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028908876] [2020-08-18 16:14:30,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:14:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:30,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:14:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:30,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:14:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:30,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:30,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:30,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:30,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:30,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:30,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:30,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:30,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:14:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:30,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:14:30,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:30,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:30,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:30,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:30,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:30,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:30,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:14:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:30,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 16:14:30,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:30,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 16:14:30,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:30,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 16:14:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:30,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:30,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:30,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:30,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:30,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:30,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:14:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:30,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 16:14:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:30,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 16:14:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:30,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 446 proven. 274 refuted. 0 times theorem prover too weak. 526 trivial. 0 not checked. [2020-08-18 16:14:30,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028908876] [2020-08-18 16:14:30,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:14:30,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-18 16:14:30,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752032675] [2020-08-18 16:14:30,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-18 16:14:30,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:14:30,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-18 16:14:30,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2020-08-18 16:14:30,839 INFO L87 Difference]: Start difference. First operand 96 states and 151 transitions. Second operand 22 states. [2020-08-18 16:14:32,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:14:32,800 INFO L93 Difference]: Finished difference Result 273 states and 544 transitions. [2020-08-18 16:14:32,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-08-18 16:14:32,801 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 160 [2020-08-18 16:14:32,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:14:32,805 INFO L225 Difference]: With dead ends: 273 [2020-08-18 16:14:32,805 INFO L226 Difference]: Without dead ends: 185 [2020-08-18 16:14:32,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=894, Invalid=4218, Unknown=0, NotChecked=0, Total=5112 [2020-08-18 16:14:32,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-08-18 16:14:32,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 123. [2020-08-18 16:14:32,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-18 16:14:32,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 205 transitions. [2020-08-18 16:14:32,849 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 205 transitions. Word has length 160 [2020-08-18 16:14:32,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:14:32,851 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 205 transitions. [2020-08-18 16:14:32,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-18 16:14:32,852 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 205 transitions. [2020-08-18 16:14:32,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-08-18 16:14:32,855 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:14:32,856 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 14, 11, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:14:32,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 16:14:32,856 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:14:32,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:14:32,857 INFO L82 PathProgramCache]: Analyzing trace with hash -66876812, now seen corresponding path program 8 times [2020-08-18 16:14:32,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:14:32,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271797002] [2020-08-18 16:14:32,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:14:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:32,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:14:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:32,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:14:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:33,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:33,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:33,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:33,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:33,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:33,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:33,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:33,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:14:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:33,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:14:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:33,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:33,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:33,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:33,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:33,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:33,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:14:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:33,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 16:14:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:33,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 16:14:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:33,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 16:14:33,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:33,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:33,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:33,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:33,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:33,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:33,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:33,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:33,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:14:33,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:33,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 16:14:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:33,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 16:14:33,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:33,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 16:14:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:33,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 503 proven. 360 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2020-08-18 16:14:33,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271797002] [2020-08-18 16:14:33,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:14:33,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-08-18 16:14:33,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390828529] [2020-08-18 16:14:33,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-08-18 16:14:33,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:14:33,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-08-18 16:14:33,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2020-08-18 16:14:33,808 INFO L87 Difference]: Start difference. First operand 123 states and 205 transitions. Second operand 23 states. [2020-08-18 16:14:35,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:14:35,831 INFO L93 Difference]: Finished difference Result 324 states and 682 transitions. [2020-08-18 16:14:35,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-08-18 16:14:35,835 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 173 [2020-08-18 16:14:35,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:14:35,841 INFO L225 Difference]: With dead ends: 324 [2020-08-18 16:14:35,842 INFO L226 Difference]: Without dead ends: 209 [2020-08-18 16:14:35,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1544 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1041, Invalid=4965, Unknown=0, NotChecked=0, Total=6006 [2020-08-18 16:14:35,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-08-18 16:14:35,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 138. [2020-08-18 16:14:35,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-18 16:14:35,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 238 transitions. [2020-08-18 16:14:35,883 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 238 transitions. Word has length 173 [2020-08-18 16:14:35,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:14:35,884 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 238 transitions. [2020-08-18 16:14:35,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-08-18 16:14:35,884 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 238 transitions. [2020-08-18 16:14:35,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-08-18 16:14:35,887 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:14:35,887 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 15, 12, 11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:14:35,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 16:14:35,887 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:14:35,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:14:35,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1028004289, now seen corresponding path program 9 times [2020-08-18 16:14:35,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:14:35,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595440758] [2020-08-18 16:14:35,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:14:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:36,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:14:36,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:36,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:14:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:36,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:36,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:36,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:36,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:36,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:36,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:36,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:14:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:36,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:14:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:36,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:36,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:36,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:36,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:36,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:36,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:14:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:36,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 16:14:36,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:36,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 16:14:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:36,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 16:14:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:36,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:36,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:36,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:36,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:36,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:36,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:36,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 16:14:36,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:36,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:14:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:36,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 16:14:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:36,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 16:14:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:36,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 16:14:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:36,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 16:14:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:14:36,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 686 proven. 70 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2020-08-18 16:14:36,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595440758] [2020-08-18 16:14:36,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:14:36,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-08-18 16:14:36,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160066788] [2020-08-18 16:14:36,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-08-18 16:14:36,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:14:36,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-08-18 16:14:36,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2020-08-18 16:14:36,708 INFO L87 Difference]: Start difference. First operand 138 states and 238 transitions. Second operand 25 states. [2020-08-18 16:14:37,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:14:37,999 INFO L93 Difference]: Finished difference Result 213 states and 357 transitions. [2020-08-18 16:14:38,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-08-18 16:14:38,000 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 186 [2020-08-18 16:14:38,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:14:38,005 INFO L225 Difference]: With dead ends: 213 [2020-08-18 16:14:38,005 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 16:14:38,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=495, Invalid=2367, Unknown=0, NotChecked=0, Total=2862 [2020-08-18 16:14:38,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 16:14:38,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 16:14:38,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 16:14:38,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 16:14:38,011 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 186 [2020-08-18 16:14:38,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:14:38,011 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 16:14:38,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-08-18 16:14:38,011 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 16:14:38,011 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 16:14:38,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 16:14:38,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 16:14:38,357 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 56 [2020-08-18 16:14:38,590 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 85 [2020-08-18 16:14:39,111 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 66 [2020-08-18 16:14:39,325 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 85 [2020-08-18 16:14:39,442 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 85 [2020-08-18 16:14:39,606 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 89 [2020-08-18 16:14:39,732 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 87 [2020-08-18 16:14:39,950 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 89 [2020-08-18 16:14:40,078 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 85 [2020-08-18 16:14:40,185 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 85 [2020-08-18 16:14:40,467 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 85 [2020-08-18 16:14:40,581 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 85 [2020-08-18 16:14:43,005 WARN L193 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 239 DAG size of output: 47 [2020-08-18 16:14:43,129 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-18 16:14:43,129 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 16:14:43,129 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 16:14:43,130 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 16:14:43,130 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 16:14:43,130 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 16:14:43,130 INFO L268 CegarLoopResult]: For program point ackermannEXIT(lines 14 22) no Hoare annotation was computed. [2020-08-18 16:14:43,130 INFO L271 CegarLoopResult]: At program point ackermannENTRY(lines 14 22) the Hoare annotation is: true [2020-08-18 16:14:43,130 INFO L264 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (and (or (and (= |ackermann_#in~n| 1) (not (<= 2 |ackermann_#res|))) (not (= |ackermann_#in~m| 0))) (= ackermann_~m |ackermann_#in~m|) (= ackermann_~n |ackermann_#in~n|)) [2020-08-18 16:14:43,131 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-08-18 16:14:43,131 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (and (= |ackermann_#in~n| 0) (= ackermann_~n |ackermann_#in~n|) (= ackermann_~m |ackermann_#in~m|)) [2020-08-18 16:14:43,131 INFO L264 CegarLoopResult]: At program point L21-2(line 21) the Hoare annotation is: (let ((.cse6 (<= 5 |ackermann_#t~ret1|)) (.cse4 (<= 3 |ackermann_#t~ret1|)) (.cse2 (<= 6 |ackermann_#t~ret1|)) (.cse3 (<= |ackermann_#in~n| 1)) (.cse8 (<= 1 |ackermann_#in~m|))) (and (let ((.cse0 (<= ackermann_~m 1)) (.cse5 (<= |ackermann_#in~n| 2)) (.cse1 (= ackermann_~m |ackermann_#in~m|))) (or (and (<= 4 |ackermann_#t~ret1|) .cse0 .cse1) (and .cse2 .cse1) (and .cse3 .cse4 .cse1) (and .cse5 .cse0 .cse1) (and (<= |ackermann_#in~m| 2) .cse5 .cse6 .cse1))) (let ((.cse7 (= ackermann_~n |ackermann_#in~n|))) (or (and .cse7 (= |ackermann_#in~m| 0)) (and (<= 2 |ackermann_#t~ret1|) .cse8 .cse7))) (let ((.cse9 (<= 2 |ackermann_#res|))) (or (and (= |ackermann_#in~n| 1) (not .cse9)) (and .cse6 .cse8 (<= |ackermann_#in~n| 4)) (and .cse4 (<= |ackermann_#in~n| 3) .cse8) (and .cse2 .cse8) (and .cse9 .cse3 .cse8))))) [2020-08-18 16:14:43,131 INFO L268 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-08-18 16:14:43,131 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-08-18 16:14:43,131 INFO L268 CegarLoopResult]: For program point L21-3(line 21) no Hoare annotation was computed. [2020-08-18 16:14:43,131 INFO L268 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-08-18 16:14:43,132 INFO L268 CegarLoopResult]: For program point ackermannFINAL(lines 14 22) no Hoare annotation was computed. [2020-08-18 16:14:43,132 INFO L268 CegarLoopResult]: For program point L33(lines 33 38) no Hoare annotation was computed. [2020-08-18 16:14:43,132 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 43) no Hoare annotation was computed. [2020-08-18 16:14:43,132 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 25 45) the Hoare annotation is: true [2020-08-18 16:14:43,132 INFO L268 CegarLoopResult]: For program point L27(lines 27 31) no Hoare annotation was computed. [2020-08-18 16:14:43,132 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 25 45) no Hoare annotation was computed. [2020-08-18 16:14:43,132 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 25 45) no Hoare annotation was computed. [2020-08-18 16:14:43,133 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-08-18 16:14:43,133 INFO L268 CegarLoopResult]: For program point L40(lines 40 44) no Hoare annotation was computed. [2020-08-18 16:14:43,133 INFO L271 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: true [2020-08-18 16:14:43,133 INFO L268 CegarLoopResult]: For program point L39-1(line 39) no Hoare annotation was computed. [2020-08-18 16:14:43,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 04:14:43 BoogieIcfgContainer [2020-08-18 16:14:43,140 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 16:14:43,141 INFO L168 Benchmark]: Toolchain (without parser) took 20574.10 ms. Allocated memory was 141.0 MB in the beginning and 491.3 MB in the end (delta: 350.2 MB). Free memory was 104.6 MB in the beginning and 278.9 MB in the end (delta: -174.2 MB). Peak memory consumption was 364.2 MB. Max. memory is 7.1 GB. [2020-08-18 16:14:43,142 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 16:14:43,143 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.11 ms. Allocated memory is still 141.0 MB. Free memory was 104.4 MB in the beginning and 94.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-08-18 16:14:43,144 INFO L168 Benchmark]: Boogie Preprocessor took 101.22 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 94.5 MB in the beginning and 182.6 MB in the end (delta: -88.1 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-08-18 16:14:43,144 INFO L168 Benchmark]: RCFGBuilder took 286.51 ms. Allocated memory is still 203.9 MB. Free memory was 182.6 MB in the beginning and 169.4 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-08-18 16:14:43,145 INFO L168 Benchmark]: TraceAbstraction took 19927.02 ms. Allocated memory was 203.9 MB in the beginning and 491.3 MB in the end (delta: 287.3 MB). Free memory was 168.7 MB in the beginning and 278.9 MB in the end (delta: -110.1 MB). Peak memory consumption was 365.4 MB. Max. memory is 7.1 GB. [2020-08-18 16:14:43,148 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 254.11 ms. Allocated memory is still 141.0 MB. Free memory was 104.4 MB in the beginning and 94.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.22 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 94.5 MB in the beginning and 182.6 MB in the end (delta: -88.1 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 286.51 ms. Allocated memory is still 203.9 MB. Free memory was 182.6 MB in the beginning and 169.4 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 19927.02 ms. Allocated memory was 203.9 MB in the beginning and 491.3 MB in the end (delta: 287.3 MB). Free memory was 168.7 MB in the beginning and 278.9 MB in the end (delta: -110.1 MB). Peak memory consumption was 365.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: 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, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.7s, OverallIterations: 12, TraceHistogramMax: 29, AutomataDifference: 9.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 332 SDtfs, 280 SDslu, 1351 SDs, 0 SdLazy, 3756 SolverSat, 927 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 770 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 354 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4290 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 265 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 605 PreInvPairs, 1445 NumberOfFragments, 152 HoareAnnotationTreeSize, 605 FomulaSimplifications, 1215295 FormulaSimplificationTreeSizeReduction, 3.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 45624 FormulaSimplificationTreeSizeReductionInter, 2.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 1227 NumberOfCodeBlocks, 1227 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1215 ConstructedInterpolants, 0 QuantifiedInterpolants, 313097 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 1 PerfectInterpolantSequences, 6526/8398 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...