/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive/Fibonacci04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:03:15,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:03:15,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:03:15,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:03:15,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:03:15,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:03:15,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:03:15,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:03:15,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:03:15,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:03:15,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:03:15,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:03:15,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:03:15,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:03:15,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:03:15,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:03:15,381 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:03:15,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:03:15,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:03:15,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:03:15,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:03:15,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:03:15,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:03:15,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:03:15,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 13:03:15,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 13:03:15,393 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 13:03:15,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 13:03:15,394 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 13:03:15,395 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 13:03:15,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 13:03:15,396 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 13:03:15,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 13:03:15,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 13:03:15,398 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 13:03:15,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 13:03:15,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 13:03:15,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 13:03:15,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:03:15,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:03:15,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:03:15,401 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:03:15,410 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:03:15,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:03:15,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:03:15,412 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:03:15,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:03:15,413 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:03:15,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:03:15,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:03:15,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:03:15,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:03:15,413 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:03:15,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:03:15,414 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:03:15,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:03:15,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:03:15,414 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:03:15,415 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:03:15,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:03:15,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:03:15,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:03:15,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:03:15,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:03:15,416 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:03:15,706 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:03:15,723 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:03:15,727 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:03:15,728 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:03:15,729 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:03:15,729 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci04.c [2020-07-07 13:03:15,790 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae0632f7b/32a3f197111b4662a136102c51f1f10c/FLAG433bd45cd [2020-07-07 13:03:16,229 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:03:16,230 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Fibonacci04.c [2020-07-07 13:03:16,236 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae0632f7b/32a3f197111b4662a136102c51f1f10c/FLAG433bd45cd [2020-07-07 13:03:16,605 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae0632f7b/32a3f197111b4662a136102c51f1f10c [2020-07-07 13:03:16,615 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:03:16,617 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:03:16,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:03:16,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:03:16,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:03:16,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:03:16" (1/1) ... [2020-07-07 13:03:16,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@755cee63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:03:16, skipping insertion in model container [2020-07-07 13:03:16,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:03:16" (1/1) ... [2020-07-07 13:03:16,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:03:16,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:03:16,824 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:03:16,828 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:03:16,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:03:16,855 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:03:16,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:03:16 WrapperNode [2020-07-07 13:03:16,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:03:16,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:03:16,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:03:16,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:03:16,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:03:16" (1/1) ... [2020-07-07 13:03:16,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:03:16" (1/1) ... [2020-07-07 13:03:16,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:03:16" (1/1) ... [2020-07-07 13:03:16,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:03:16" (1/1) ... [2020-07-07 13:03:16,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:03:16" (1/1) ... [2020-07-07 13:03:16,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:03:16" (1/1) ... [2020-07-07 13:03:16,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:03:16" (1/1) ... [2020-07-07 13:03:16,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:03:16,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:03:16,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:03:16,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:03:16,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:03:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-07 13:03:17,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:03:17,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:03:17,020 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-07-07 13:03:17,020 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:03:17,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:03:17,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 13:03:17,020 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-07-07 13:03:17,021 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:03:17,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:03:17,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:03:17,208 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:03:17,209 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-07 13:03:17,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:03:17 BoogieIcfgContainer [2020-07-07 13:03:17,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:03:17,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:03:17,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:03:17,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:03:17,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:03:16" (1/3) ... [2020-07-07 13:03:17,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796204a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:03:17, skipping insertion in model container [2020-07-07 13:03:17,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:03:16" (2/3) ... [2020-07-07 13:03:17,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796204a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:03:17, skipping insertion in model container [2020-07-07 13:03:17,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:03:17" (3/3) ... [2020-07-07 13:03:17,221 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci04.c [2020-07-07 13:03:17,232 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:03:17,240 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:03:17,255 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:03:17,296 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:03:17,296 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:03:17,296 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:03:17,297 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:03:17,297 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:03:17,297 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:03:17,297 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:03:17,300 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:03:17,327 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-07-07 13:03:17,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-07 13:03:17,348 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:03:17,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:03:17,349 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:03:17,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:03:17,357 INFO L82 PathProgramCache]: Analyzing trace with hash -2064988448, now seen corresponding path program 1 times [2020-07-07 13:03:17,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:03:17,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718895158] [2020-07-07 13:03:17,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:03:17,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:17,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:03:17,591 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:03:17,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718895158] [2020-07-07 13:03:17,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:03:17,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 13:03:17,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288664085] [2020-07-07 13:03:17,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 13:03:17,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:03:17,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 13:03:17,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:03:17,616 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-07-07 13:03:17,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:03:17,740 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2020-07-07 13:03:17,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 13:03:17,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-07-07 13:03:17,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:03:17,755 INFO L225 Difference]: With dead ends: 48 [2020-07-07 13:03:17,755 INFO L226 Difference]: Without dead ends: 30 [2020-07-07 13:03:17,759 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 [2020-07-07 13:03:17,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-07 13:03:17,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-07-07 13:03:17,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-07 13:03:17,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-07-07 13:03:17,804 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 18 [2020-07-07 13:03:17,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:03:17,805 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-07-07 13:03:17,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 13:03:17,805 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-07-07 13:03:17,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-07 13:03:17,807 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:03:17,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:03:17,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:03:17,808 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:03:17,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:03:17,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1678486471, now seen corresponding path program 1 times [2020-07-07 13:03:17,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:03:17,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520523] [2020-07-07 13:03:17,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:03:17,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:17,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:17,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:03:17,897 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:03:17,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520523] [2020-07-07 13:03:17,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:03:17,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 13:03:17,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734154967] [2020-07-07 13:03:17,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 13:03:17,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:03:17,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 13:03:17,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:03:17,900 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2020-07-07 13:03:17,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:03:17,977 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2020-07-07 13:03:17,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 13:03:17,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-07-07 13:03:17,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:03:17,980 INFO L225 Difference]: With dead ends: 38 [2020-07-07 13:03:17,980 INFO L226 Difference]: Without dead ends: 32 [2020-07-07 13:03:17,982 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 [2020-07-07 13:03:17,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-07 13:03:17,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-07-07 13:03:17,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-07 13:03:17,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-07-07 13:03:17,994 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 19 [2020-07-07 13:03:17,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:03:17,994 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-07-07 13:03:17,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 13:03:17,995 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-07-07 13:03:17,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-07 13:03:17,997 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:03:17,997 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:03:17,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:03:17,998 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:03:17,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:03:17,998 INFO L82 PathProgramCache]: Analyzing trace with hash 961212118, now seen corresponding path program 1 times [2020-07-07 13:03:17,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:03:17,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743785807] [2020-07-07 13:03:17,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Garbage collection #1: 17 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 17 to 31 Garbage collection #2: 31 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 31 to 61 Garbage collection #3: 61 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 61 to 113 Garbage collection #4: 113 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 113 to 223 [2020-07-07 13:03:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:18,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:18,154 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-07 13:03:18,155 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:03:18,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743785807] [2020-07-07 13:03:18,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:03:18,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 13:03:18,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572867] [2020-07-07 13:03:18,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 13:03:18,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:03:18,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 13:03:18,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:03:18,158 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 6 states. [2020-07-07 13:03:18,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:03:18,252 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2020-07-07 13:03:18,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 13:03:18,253 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-07-07 13:03:18,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:03:18,255 INFO L225 Difference]: With dead ends: 54 [2020-07-07 13:03:18,255 INFO L226 Difference]: Without dead ends: 32 [2020-07-07 13:03:18,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-07-07 13:03:18,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-07 13:03:18,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-07-07 13:03:18,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-07 13:03:18,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-07-07 13:03:18,268 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 35 [2020-07-07 13:03:18,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:03:18,268 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-07-07 13:03:18,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 13:03:18,269 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-07-07 13:03:18,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-07 13:03:18,271 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:03:18,271 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:03:18,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:03:18,272 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:03:18,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:03:18,273 INFO L82 PathProgramCache]: Analyzing trace with hash -125795935, now seen corresponding path program 1 times [2020-07-07 13:03:18,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:03:18,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019551984] [2020-07-07 13:03:18,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Garbage collection #1: 17 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 17 to 31 Garbage collection #2: 31 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 31 to 61 Garbage collection #3: 61 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 61 to 113 Garbage collection #4: 113 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 113 to 223 [2020-07-07 13:03:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:18,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:18,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:18,439 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-07-07 13:03:18,440 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:03:18,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019551984] [2020-07-07 13:03:18,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:03:18,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-07 13:03:18,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757354172] [2020-07-07 13:03:18,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 13:03:18,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:03:18,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 13:03:18,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-07-07 13:03:18,455 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 7 states. [2020-07-07 13:03:18,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:03:18,561 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2020-07-07 13:03:18,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 13:03:18,562 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-07-07 13:03:18,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:03:18,565 INFO L225 Difference]: With dead ends: 58 [2020-07-07 13:03:18,565 INFO L226 Difference]: Without dead ends: 52 [2020-07-07 13:03:18,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:03:18,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-07-07 13:03:18,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-07-07 13:03:18,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-07-07 13:03:18,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2020-07-07 13:03:18,581 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 36 [2020-07-07 13:03:18,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:03:18,581 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2020-07-07 13:03:18,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 13:03:18,582 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2020-07-07 13:03:18,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-07 13:03:18,584 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:03:18,584 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:03:18,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 13:03:18,585 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:03:18,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:03:18,585 INFO L82 PathProgramCache]: Analyzing trace with hash 331377205, now seen corresponding path program 2 times [2020-07-07 13:03:18,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:03:18,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459193863] [2020-07-07 13:03:18,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Garbage collection #1: 19 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 19 to 37 Garbage collection #2: 37 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 37 to 73 Garbage collection #3: 73 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 73 to 139 Garbage collection #4: 139 nodes / 0 free / 0.001s / 0.001s total Resizing node table from 139 to 277 Garbage collection #1: 17 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 17 to 31 Garbage collection #2: 31 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 31 to 61 Garbage collection #3: 61 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 61 to 113 Garbage collection #4: 113 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 113 to 223 [2020-07-07 13:03:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:18,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:18,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:18,898 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-07 13:03:18,898 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:03:18,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459193863] [2020-07-07 13:03:18,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:03:18,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 13:03:18,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518025787] [2020-07-07 13:03:18,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 13:03:18,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:03:18,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 13:03:18,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:03:18,901 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand 8 states. [2020-07-07 13:03:19,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:03:19,021 INFO L93 Difference]: Finished difference Result 110 states and 153 transitions. [2020-07-07 13:03:19,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 13:03:19,023 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-07-07 13:03:19,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:03:19,025 INFO L225 Difference]: With dead ends: 110 [2020-07-07 13:03:19,026 INFO L226 Difference]: Without dead ends: 66 [2020-07-07 13:03:19,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-07-07 13:03:19,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-07-07 13:03:19,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-07-07 13:03:19,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-07-07 13:03:19,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2020-07-07 13:03:19,043 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 53 [2020-07-07 13:03:19,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:03:19,043 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2020-07-07 13:03:19,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 13:03:19,044 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2020-07-07 13:03:19,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-07-07 13:03:19,046 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:03:19,047 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:03:19,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 13:03:19,047 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:03:19,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:03:19,048 INFO L82 PathProgramCache]: Analyzing trace with hash -2068833840, now seen corresponding path program 3 times [2020-07-07 13:03:19,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:03:19,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433227639] [2020-07-07 13:03:19,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Garbage collection #1: 19 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 19 to 37 Garbage collection #2: 37 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 37 to 73 Garbage collection #3: 73 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 73 to 139 Garbage collection #4: 139 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 139 to 277 Garbage collection #1: 17 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 17 to 31 Garbage collection #2: 31 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 31 to 61 Garbage collection #3: 61 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 61 to 113 Garbage collection #4: 113 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 113 to 223 [2020-07-07 13:03:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:19,293 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-07 13:03:19,293 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:03:19,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433227639] [2020-07-07 13:03:19,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:03:19,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 13:03:19,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495176480] [2020-07-07 13:03:19,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 13:03:19,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:03:19,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 13:03:19,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-07-07 13:03:19,299 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand 9 states. [2020-07-07 13:03:19,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:03:19,449 INFO L93 Difference]: Finished difference Result 88 states and 116 transitions. [2020-07-07 13:03:19,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-07 13:03:19,451 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-07-07 13:03:19,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:03:19,456 INFO L225 Difference]: With dead ends: 88 [2020-07-07 13:03:19,456 INFO L226 Difference]: Without dead ends: 82 [2020-07-07 13:03:19,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-07-07 13:03:19,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-07-07 13:03:19,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 76. [2020-07-07 13:03:19,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-07-07 13:03:19,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 102 transitions. [2020-07-07 13:03:19,491 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 102 transitions. Word has length 54 [2020-07-07 13:03:19,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:03:19,494 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 102 transitions. [2020-07-07 13:03:19,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 13:03:19,494 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 102 transitions. [2020-07-07 13:03:19,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-07-07 13:03:19,508 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:03:19,509 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:03:19,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 13:03:19,509 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:03:19,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:03:19,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1575340027, now seen corresponding path program 4 times [2020-07-07 13:03:19,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:03:19,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028881158] [2020-07-07 13:03:19,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Garbage collection #1: 19 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 19 to 37 Garbage collection #2: 37 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 37 to 73 Garbage collection #3: 73 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 73 to 139 Garbage collection #4: 139 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 139 to 277 Garbage collection #1: 17 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 17 to 31 Garbage collection #2: 31 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 31 to 61 Garbage collection #3: 61 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 61 to 113 Garbage collection #4: 113 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 113 to 223 [2020-07-07 13:03:19,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:19,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:19,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:19,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:19,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:19,996 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 27 proven. 70 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-07-07 13:03:19,996 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:03:19,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028881158] [2020-07-07 13:03:19,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:03:19,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 13:03:19,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423052915] [2020-07-07 13:03:20,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 13:03:20,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:03:20,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 13:03:20,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-07-07 13:03:20,002 INFO L87 Difference]: Start difference. First operand 76 states and 102 transitions. Second operand 14 states. [2020-07-07 13:03:20,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:03:20,283 INFO L93 Difference]: Finished difference Result 137 states and 198 transitions. [2020-07-07 13:03:20,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-07 13:03:20,283 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 125 [2020-07-07 13:03:20,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:03:20,287 INFO L225 Difference]: With dead ends: 137 [2020-07-07 13:03:20,288 INFO L226 Difference]: Without dead ends: 68 [2020-07-07 13:03:20,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2020-07-07 13:03:20,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-07 13:03:20,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 59. [2020-07-07 13:03:20,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-07 13:03:20,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 72 transitions. [2020-07-07 13:03:20,312 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 72 transitions. Word has length 125 [2020-07-07 13:03:20,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:03:20,313 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 72 transitions. [2020-07-07 13:03:20,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 13:03:20,313 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 72 transitions. [2020-07-07 13:03:20,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-07-07 13:03:20,316 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:03:20,316 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:03:20,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 13:03:20,317 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:03:20,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:03:20,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1005193447, now seen corresponding path program 5 times [2020-07-07 13:03:20,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:03:20,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824099850] [2020-07-07 13:03:20,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Garbage collection #1: 19 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 19 to 37 Garbage collection #2: 37 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 37 to 73 Garbage collection #3: 73 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 73 to 139 Garbage collection #4: 139 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 139 to 277 Garbage collection #1: 17 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 17 to 31 Garbage collection #2: 31 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 31 to 61 Garbage collection #3: 61 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 61 to 113 Garbage collection #4: 113 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 113 to 223 [2020-07-07 13:03:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:20,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:20,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:20,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:20,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:20,547 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-07-07 13:03:20,548 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:03:20,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824099850] [2020-07-07 13:03:20,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:03:20,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-07 13:03:20,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980225623] [2020-07-07 13:03:20,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-07 13:03:20,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:03:20,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-07 13:03:20,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-07-07 13:03:20,550 INFO L87 Difference]: Start difference. First operand 59 states and 72 transitions. Second operand 11 states. [2020-07-07 13:03:20,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:03:20,672 INFO L93 Difference]: Finished difference Result 71 states and 85 transitions. [2020-07-07 13:03:20,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 13:03:20,673 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 89 [2020-07-07 13:03:20,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:03:20,674 INFO L225 Difference]: With dead ends: 71 [2020-07-07 13:03:20,675 INFO L226 Difference]: Without dead ends: 65 [2020-07-07 13:03:20,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-07-07 13:03:20,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-07-07 13:03:20,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-07-07 13:03:20,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-07-07 13:03:20,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 79 transitions. [2020-07-07 13:03:20,686 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 79 transitions. Word has length 89 [2020-07-07 13:03:20,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:03:20,687 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 79 transitions. [2020-07-07 13:03:20,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-07 13:03:20,687 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 79 transitions. [2020-07-07 13:03:20,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-07-07 13:03:20,690 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:03:20,690 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 17, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:03:20,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 13:03:20,690 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:03:20,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:03:20,691 INFO L82 PathProgramCache]: Analyzing trace with hash -750862549, now seen corresponding path program 6 times [2020-07-07 13:03:20,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:03:20,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175353620] [2020-07-07 13:03:20,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Garbage collection #1: 19 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 19 to 37 Garbage collection #2: 37 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 37 to 73 Garbage collection #3: 73 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 73 to 139 Garbage collection #4: 139 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 139 to 277 Garbage collection #1: 17 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 17 to 31 Garbage collection #2: 31 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 31 to 61 Garbage collection #3: 61 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 61 to 113 Garbage collection #4: 113 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 113 to 223 Garbage collection #1: 17 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 17 to 31 Garbage collection #2: 31 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 31 to 61 Garbage collection #3: 61 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 61 to 113 Garbage collection #4: 113 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 113 to 223 [2020-07-07 13:03:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:20,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:20,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:20,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:20,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:20,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:20,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:20,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:21,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:21,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:21,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:21,131 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 92 proven. 32 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2020-07-07 13:03:21,131 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:03:21,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175353620] [2020-07-07 13:03:21,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:03:21,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-07 13:03:21,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211326875] [2020-07-07 13:03:21,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-07 13:03:21,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:03:21,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-07 13:03:21,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-07-07 13:03:21,134 INFO L87 Difference]: Start difference. First operand 65 states and 79 transitions. Second operand 12 states. [2020-07-07 13:03:21,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:03:21,355 INFO L93 Difference]: Finished difference Result 141 states and 199 transitions. [2020-07-07 13:03:21,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-07 13:03:21,355 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 195 [2020-07-07 13:03:21,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:03:21,357 INFO L225 Difference]: With dead ends: 141 [2020-07-07 13:03:21,357 INFO L226 Difference]: Without dead ends: 68 [2020-07-07 13:03:21,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-07-07 13:03:21,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-07 13:03:21,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-07-07 13:03:21,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-07 13:03:21,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2020-07-07 13:03:21,369 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 195 [2020-07-07 13:03:21,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:03:21,370 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2020-07-07 13:03:21,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-07 13:03:21,370 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2020-07-07 13:03:21,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-07-07 13:03:21,372 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:03:21,372 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:03:21,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 13:03:21,372 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:03:21,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:03:21,373 INFO L82 PathProgramCache]: Analyzing trace with hash -311463261, now seen corresponding path program 7 times [2020-07-07 13:03:21,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:03:21,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837103582] [2020-07-07 13:03:21,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Garbage collection #1: 19 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 19 to 37 Garbage collection #2: 37 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 37 to 73 Garbage collection #3: 73 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 73 to 139 Garbage collection #4: 139 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 139 to 277 Garbage collection #1: 17 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 17 to 31 Garbage collection #2: 31 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 31 to 61 Garbage collection #3: 61 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 61 to 113 Garbage collection #4: 113 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 113 to 223 Garbage collection #1: 17 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 17 to 31 Garbage collection #2: 31 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 31 to 61 Garbage collection #3: 61 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 61 to 113 Garbage collection #4: 113 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 113 to 223 [2020-07-07 13:03:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:03:21,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:03:21,476 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:03:21,477 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 13:03:21,477 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 13:03:21,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-07 13:03:21,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 01:03:21 BoogieIcfgContainer [2020-07-07 13:03:21,502 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 13:03:21,505 INFO L168 Benchmark]: Toolchain (without parser) took 4887.03 ms. Allocated memory was 134.7 MB in the beginning and 305.1 MB in the end (delta: 170.4 MB). Free memory was 100.0 MB in the beginning and 105.2 MB in the end (delta: -5.2 MB). Peak memory consumption was 165.2 MB. Max. memory is 7.1 GB. [2020-07-07 13:03:21,506 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 134.7 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 13:03:21,506 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.63 ms. Allocated memory is still 134.7 MB. Free memory was 99.6 MB in the beginning and 90.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:03:21,507 INFO L168 Benchmark]: Boogie Preprocessor took 100.29 ms. Allocated memory was 134.7 MB in the beginning and 198.2 MB in the end (delta: 63.4 MB). Free memory was 90.2 MB in the beginning and 177.3 MB in the end (delta: -87.1 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:03:21,508 INFO L168 Benchmark]: RCFGBuilder took 256.49 ms. Allocated memory is still 198.2 MB. Free memory was 177.3 MB in the beginning and 164.1 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-07-07 13:03:21,509 INFO L168 Benchmark]: TraceAbstraction took 4287.68 ms. Allocated memory was 198.2 MB in the beginning and 305.1 MB in the end (delta: 107.0 MB). Free memory was 163.4 MB in the beginning and 105.2 MB in the end (delta: 58.2 MB). Peak memory consumption was 165.2 MB. Max. memory is 7.1 GB. [2020-07-07 13:03:21,513 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 134.7 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 237.63 ms. Allocated memory is still 134.7 MB. Free memory was 99.6 MB in the beginning and 90.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.29 ms. Allocated memory was 134.7 MB in the beginning and 198.2 MB in the end (delta: 63.4 MB). Free memory was 90.2 MB in the beginning and 177.3 MB in the end (delta: -87.1 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 256.49 ms. Allocated memory is still 198.2 MB. Free memory was 177.3 MB in the beginning and 164.1 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4287.68 ms. Allocated memory was 198.2 MB in the beginning and 305.1 MB in the end (delta: 107.0 MB). Free memory was 163.4 MB in the beginning and 105.2 MB in the end (delta: 58.2 MB). Peak memory consumption was 165.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 33]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L28] int x = __VERIFIER_nondet_int(); [L29] CALL, EXPR fibonacci(x) [L17] COND FALSE !(n < 1) [L19] COND FALSE !(n == 1) [L22] CALL, EXPR fibonacci(n-1) [L17] COND FALSE !(n < 1) [L19] COND FALSE !(n == 1) [L22] CALL, EXPR fibonacci(n-1) [L17] COND FALSE !(n < 1) [L19] COND FALSE !(n == 1) [L22] CALL, EXPR fibonacci(n-1) [L17] COND FALSE !(n < 1) [L19] COND FALSE !(n == 1) [L22] CALL, EXPR fibonacci(n-1) [L17] COND FALSE !(n < 1) [L19] COND TRUE n == 1 [L20] return 1; [L22] RET, EXPR fibonacci(n-1) [L22] CALL, EXPR fibonacci(n-2) [L17] COND TRUE n < 1 [L18] return 0; [L22] RET, EXPR fibonacci(n-2) [L22] return fibonacci(n-1) + fibonacci(n-2); [L22] RET, EXPR fibonacci(n-1) [L22] CALL, EXPR fibonacci(n-2) [L17] COND FALSE !(n < 1) [L19] COND TRUE n == 1 [L20] return 1; [L22] RET, EXPR fibonacci(n-2) [L22] return fibonacci(n-1) + fibonacci(n-2); [L22] RET, EXPR fibonacci(n-1) [L22] CALL, EXPR fibonacci(n-2) [L17] COND FALSE !(n < 1) [L19] COND FALSE !(n == 1) [L22] CALL, EXPR fibonacci(n-1) [L17] COND FALSE !(n < 1) [L19] COND TRUE n == 1 [L20] return 1; [L22] RET, EXPR fibonacci(n-1) [L22] CALL, EXPR fibonacci(n-2) [L17] COND TRUE n < 1 [L18] return 0; [L22] RET, EXPR fibonacci(n-2) [L22] return fibonacci(n-1) + fibonacci(n-2); [L22] RET, EXPR fibonacci(n-2) [L22] return fibonacci(n-1) + fibonacci(n-2); [L22] RET, EXPR fibonacci(n-1) [L22] CALL, EXPR fibonacci(n-2) [L17] COND FALSE !(n < 1) [L19] COND FALSE !(n == 1) [L22] CALL, EXPR fibonacci(n-1) [L17] COND FALSE !(n < 1) [L19] COND FALSE !(n == 1) [L22] CALL, EXPR fibonacci(n-1) [L17] COND FALSE !(n < 1) [L19] COND TRUE n == 1 [L20] return 1; [L22] RET, EXPR fibonacci(n-1) [L22] CALL, EXPR fibonacci(n-2) [L17] COND TRUE n < 1 [L18] return 0; [L22] RET, EXPR fibonacci(n-2) [L22] return fibonacci(n-1) + fibonacci(n-2); [L22] RET, EXPR fibonacci(n-1) [L22] CALL, EXPR fibonacci(n-2) [L17] COND FALSE !(n < 1) [L19] COND TRUE n == 1 [L20] return 1; [L22] RET, EXPR fibonacci(n-2) [L22] return fibonacci(n-1) + fibonacci(n-2); [L22] RET, EXPR fibonacci(n-2) [L22] return fibonacci(n-1) + fibonacci(n-2); [L29] RET, EXPR fibonacci(x) [L29] int result = fibonacci(x); [L30] COND FALSE !(x != 5 || result == 3) [L33] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.1s, OverallIterations: 10, TraceHistogramMax: 21, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 283 SDtfs, 377 SDslu, 862 SDs, 0 SdLazy, 689 SolverSat, 199 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 238 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 29 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...