/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/recursive/Ackermann01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 19:15:03,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 19:15:03,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 19:15:03,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 19:15:03,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 19:15:03,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 19:15:03,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 19:15:03,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 19:15:03,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 19:15:03,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 19:15:03,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 19:15:03,726 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 19:15:03,727 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 19:15:03,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 19:15:03,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 19:15:03,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 19:15:03,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 19:15:03,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 19:15:03,754 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 19:15:03,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 19:15:03,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 19:15:03,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 19:15:03,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 19:15:03,771 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 19:15:03,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 19:15:03,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 19:15:03,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 19:15:03,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 19:15:03,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 19:15:03,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 19:15:03,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 19:15:03,793 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 19:15:03,793 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 19:15:03,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 19:15:03,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 19:15:03,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 19:15:03,797 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 19:15:03,859 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 19:15:03,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 19:15:03,864 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 19:15:03,864 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 19:15:03,864 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 19:15:03,865 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 19:15:03,865 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 19:15:03,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 19:15:03,865 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 19:15:03,866 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 19:15:03,866 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 19:15:03,866 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 19:15:03,866 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 19:15:03,866 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 19:15:03,867 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 19:15:03,868 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 19:15:03,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 19:15:03,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 19:15:03,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 19:15:03,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 19:15:03,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 19:15:03,870 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 19:15:03,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 19:15:03,870 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 19:15:03,870 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 19:15:03,871 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 19:15:04,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 19:15:04,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 19:15:04,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 19:15:04,306 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 19:15:04,306 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 19:15:04,307 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Ackermann01-2.c [2021-01-06 19:15:04,403 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/48b0742ea/168b4ecde5904ef698fcdb5797d656f6/FLAG551964e4a [2021-01-06 19:15:05,067 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 19:15:05,068 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/recursive/Ackermann01-2.c [2021-01-06 19:15:05,076 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/48b0742ea/168b4ecde5904ef698fcdb5797d656f6/FLAG551964e4a [2021-01-06 19:15:05,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/48b0742ea/168b4ecde5904ef698fcdb5797d656f6 [2021-01-06 19:15:05,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 19:15:05,445 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 19:15:05,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 19:15:05,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 19:15:05,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 19:15:05,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 07:15:05" (1/1) ... [2021-01-06 19:15:05,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@484fe21e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:05, skipping insertion in model container [2021-01-06 19:15:05,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 07:15:05" (1/1) ... [2021-01-06 19:15:05,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 19:15:05,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 19:15:05,675 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/recursive/Ackermann01-2.c[1234,1247] [2021-01-06 19:15:05,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 19:15:05,689 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 19:15:05,714 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/recursive/Ackermann01-2.c[1234,1247] [2021-01-06 19:15:05,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 19:15:05,729 INFO L208 MainTranslator]: Completed translation [2021-01-06 19:15:05,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:05 WrapperNode [2021-01-06 19:15:05,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 19:15:05,731 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 19:15:05,731 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 19:15:05,732 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 19:15:05,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:05" (1/1) ... [2021-01-06 19:15:05,748 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:05" (1/1) ... [2021-01-06 19:15:05,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 19:15:05,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 19:15:05,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 19:15:05,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 19:15:05,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:05" (1/1) ... [2021-01-06 19:15:05,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:05" (1/1) ... [2021-01-06 19:15:05,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:05" (1/1) ... [2021-01-06 19:15:05,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:05" (1/1) ... [2021-01-06 19:15:05,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:05" (1/1) ... [2021-01-06 19:15:05,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:05" (1/1) ... [2021-01-06 19:15:05,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:05" (1/1) ... [2021-01-06 19:15:05,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 19:15:05,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 19:15:05,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 19:15:05,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 19:15:05,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:05" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 19:15:05,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 19:15:05,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 19:15:05,897 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2021-01-06 19:15:05,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2021-01-06 19:15:05,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 19:15:05,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 19:15:06,260 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 19:15:06,260 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-01-06 19:15:06,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 07:15:06 BoogieIcfgContainer [2021-01-06 19:15:06,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 19:15:06,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 19:15:06,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 19:15:06,295 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 19:15:06,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 07:15:05" (1/3) ... [2021-01-06 19:15:06,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e5492b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 07:15:06, skipping insertion in model container [2021-01-06 19:15:06,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:05" (2/3) ... [2021-01-06 19:15:06,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e5492b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 07:15:06, skipping insertion in model container [2021-01-06 19:15:06,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 07:15:06" (3/3) ... [2021-01-06 19:15:06,303 INFO L111 eAbstractionObserver]: Analyzing ICFG Ackermann01-2.c [2021-01-06 19:15:06,341 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 19:15:06,349 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 19:15:06,384 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 19:15:06,425 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 19:15:06,425 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 19:15:06,425 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 19:15:06,426 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 19:15:06,426 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 19:15:06,426 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 19:15:06,426 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 19:15:06,427 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 19:15:06,450 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2021-01-06 19:15:06,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 19:15:06,460 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:06,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:06,462 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:06,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:06,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1470704041, now seen corresponding path program 1 times [2021-01-06 19:15:06,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:06,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469886719] [2021-01-06 19:15:06,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:06,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-01-06 19:15:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:06,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:15:06,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469886719] [2021-01-06 19:15:06,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:15:06,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 19:15:06,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297383368] [2021-01-06 19:15:06,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 19:15:06,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:06,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 19:15:06,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-06 19:15:06,958 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 7 states. [2021-01-06 19:15:07,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:07,106 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2021-01-06 19:15:07,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 19:15:07,108 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2021-01-06 19:15:07,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:07,120 INFO L225 Difference]: With dead ends: 38 [2021-01-06 19:15:07,120 INFO L226 Difference]: Without dead ends: 22 [2021-01-06 19:15:07,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-01-06 19:15:07,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-01-06 19:15:07,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-01-06 19:15:07,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-01-06 19:15:07,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2021-01-06 19:15:07,176 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 12 [2021-01-06 19:15:07,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:07,176 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2021-01-06 19:15:07,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 19:15:07,177 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2021-01-06 19:15:07,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-06 19:15:07,179 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:07,179 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:07,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 19:15:07,180 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:07,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:07,182 INFO L82 PathProgramCache]: Analyzing trace with hash 941922339, now seen corresponding path program 1 times [2021-01-06 19:15:07,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:07,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989353973] [2021-01-06 19:15:07,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:07,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-01-06 19:15:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:07,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:07,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:07,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 19:15:07,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989353973] [2021-01-06 19:15:07,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:15:07,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 19:15:07,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105064380] [2021-01-06 19:15:07,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 19:15:07,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:07,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 19:15:07,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-01-06 19:15:07,337 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand 8 states. [2021-01-06 19:15:07,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:07,542 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2021-01-06 19:15:07,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 19:15:07,543 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2021-01-06 19:15:07,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:07,545 INFO L225 Difference]: With dead ends: 29 [2021-01-06 19:15:07,545 INFO L226 Difference]: Without dead ends: 25 [2021-01-06 19:15:07,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-01-06 19:15:07,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-01-06 19:15:07,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2021-01-06 19:15:07,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-01-06 19:15:07,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2021-01-06 19:15:07,567 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 19 [2021-01-06 19:15:07,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:07,568 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2021-01-06 19:15:07,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 19:15:07,569 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2021-01-06 19:15:07,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-01-06 19:15:07,573 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:07,574 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] [2021-01-06 19:15:07,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 19:15:07,574 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:07,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:07,576 INFO L82 PathProgramCache]: Analyzing trace with hash -445405100, now seen corresponding path program 1 times [2021-01-06 19:15:07,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:07,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324902762] [2021-01-06 19:15:07,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:07,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-01-06 19:15:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:07,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:07,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-01-06 19:15:07,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:07,769 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-06 19:15:07,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324902762] [2021-01-06 19:15:07,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897127339] [2021-01-06 19:15:07,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:07,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-06 19:15:07,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:08,011 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-01-06 19:15:08,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:15:08,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2021-01-06 19:15:08,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895726423] [2021-01-06 19:15:08,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 19:15:08,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:08,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 19:15:08,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-01-06 19:15:08,014 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand 10 states. [2021-01-06 19:15:08,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:08,144 INFO L93 Difference]: Finished difference Result 48 states and 75 transitions. [2021-01-06 19:15:08,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 19:15:08,144 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2021-01-06 19:15:08,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:08,147 INFO L225 Difference]: With dead ends: 48 [2021-01-06 19:15:08,147 INFO L226 Difference]: Without dead ends: 30 [2021-01-06 19:15:08,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-01-06 19:15:08,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-01-06 19:15:08,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2021-01-06 19:15:08,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-01-06 19:15:08,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2021-01-06 19:15:08,158 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 25 [2021-01-06 19:15:08,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:08,158 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2021-01-06 19:15:08,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 19:15:08,158 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2021-01-06 19:15:08,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-06 19:15:08,160 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:08,160 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:08,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-01-06 19:15:08,375 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:08,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:08,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1893657534, now seen corresponding path program 1 times [2021-01-06 19:15:08,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:08,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763771211] [2021-01-06 19:15:08,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:08,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-01-06 19:15:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:08,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:08,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:08,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-01-06 19:15:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:08,567 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-06 19:15:08,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763771211] [2021-01-06 19:15:08,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451385643] [2021-01-06 19:15:08,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:08,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-06 19:15:08,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:08,702 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-01-06 19:15:08,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:15:08,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 14 [2021-01-06 19:15:08,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641142685] [2021-01-06 19:15:08,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-06 19:15:08,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:08,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-06 19:15:08,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-01-06 19:15:08,706 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand 14 states. [2021-01-06 19:15:09,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:09,175 INFO L93 Difference]: Finished difference Result 51 states and 84 transitions. [2021-01-06 19:15:09,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-06 19:15:09,175 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 32 [2021-01-06 19:15:09,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:09,179 INFO L225 Difference]: With dead ends: 51 [2021-01-06 19:15:09,180 INFO L226 Difference]: Without dead ends: 47 [2021-01-06 19:15:09,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2021-01-06 19:15:09,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-01-06 19:15:09,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 33. [2021-01-06 19:15:09,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-01-06 19:15:09,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 50 transitions. [2021-01-06 19:15:09,215 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 50 transitions. Word has length 32 [2021-01-06 19:15:09,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:09,216 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 50 transitions. [2021-01-06 19:15:09,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-06 19:15:09,216 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 50 transitions. [2021-01-06 19:15:09,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-01-06 19:15:09,220 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:09,220 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] [2021-01-06 19:15:09,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:09,435 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:09,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:09,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1429337198, now seen corresponding path program 2 times [2021-01-06 19:15:09,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:09,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287711217] [2021-01-06 19:15:09,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:09,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:09,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-01-06 19:15:09,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:09,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:09,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:09,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:09,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-01-06 19:15:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:09,662 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-01-06 19:15:09,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287711217] [2021-01-06 19:15:09,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308001649] [2021-01-06 19:15:09,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:09,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 19:15:09,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:15:09,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-06 19:15:09,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:09,831 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-01-06 19:15:09,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:15:09,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 15 [2021-01-06 19:15:09,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036877034] [2021-01-06 19:15:09,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-06 19:15:09,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:09,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-06 19:15:09,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-01-06 19:15:09,834 INFO L87 Difference]: Start difference. First operand 33 states and 50 transitions. Second operand 15 states. [2021-01-06 19:15:10,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:10,240 INFO L93 Difference]: Finished difference Result 62 states and 113 transitions. [2021-01-06 19:15:10,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-06 19:15:10,241 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 39 [2021-01-06 19:15:10,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:10,244 INFO L225 Difference]: With dead ends: 62 [2021-01-06 19:15:10,244 INFO L226 Difference]: Without dead ends: 58 [2021-01-06 19:15:10,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=565, Unknown=0, NotChecked=0, Total=702 [2021-01-06 19:15:10,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-01-06 19:15:10,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 31. [2021-01-06 19:15:10,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-01-06 19:15:10,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 44 transitions. [2021-01-06 19:15:10,260 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 44 transitions. Word has length 39 [2021-01-06 19:15:10,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:10,260 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 44 transitions. [2021-01-06 19:15:10,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-06 19:15:10,261 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 44 transitions. [2021-01-06 19:15:10,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-01-06 19:15:10,263 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:10,263 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] [2021-01-06 19:15:10,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:10,477 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:10,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:10,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1137182642, now seen corresponding path program 3 times [2021-01-06 19:15:10,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:10,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897412848] [2021-01-06 19:15:10,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:10,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-01-06 19:15:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:10,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:10,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:10,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-01-06 19:15:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:10,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:10,578 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-01-06 19:15:10,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897412848] [2021-01-06 19:15:10,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150965522] [2021-01-06 19:15:10,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:10,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-06 19:15:10,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:15:10,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-06 19:15:10,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:10,792 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-01-06 19:15:10,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:15:10,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2021-01-06 19:15:10,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988322840] [2021-01-06 19:15:10,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-06 19:15:10,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:10,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-06 19:15:10,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-01-06 19:15:10,795 INFO L87 Difference]: Start difference. First operand 31 states and 44 transitions. Second operand 14 states. [2021-01-06 19:15:11,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:11,214 INFO L93 Difference]: Finished difference Result 78 states and 135 transitions. [2021-01-06 19:15:11,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 19:15:11,215 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 39 [2021-01-06 19:15:11,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:11,217 INFO L225 Difference]: With dead ends: 78 [2021-01-06 19:15:11,217 INFO L226 Difference]: Without dead ends: 50 [2021-01-06 19:15:11,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2021-01-06 19:15:11,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-01-06 19:15:11,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-01-06 19:15:11,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-01-06 19:15:11,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 78 transitions. [2021-01-06 19:15:11,230 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 78 transitions. Word has length 39 [2021-01-06 19:15:11,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:11,231 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 78 transitions. [2021-01-06 19:15:11,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-06 19:15:11,231 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 78 transitions. [2021-01-06 19:15:11,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-01-06 19:15:11,234 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:11,234 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] [2021-01-06 19:15:11,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:11,448 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:11,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:11,449 INFO L82 PathProgramCache]: Analyzing trace with hash 985301155, now seen corresponding path program 4 times [2021-01-06 19:15:11,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:11,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820888770] [2021-01-06 19:15:11,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:11,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-01-06 19:15:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:11,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:11,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:11,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:11,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:11,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:11,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:11,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-01-06 19:15:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:11,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:11,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:11,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-01-06 19:15:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:11,537 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 32 proven. 22 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-01-06 19:15:11,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820888770] [2021-01-06 19:15:11,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769068037] [2021-01-06 19:15:11,538 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:11,607 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 19:15:11,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:15:11,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-06 19:15:11,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:11,683 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 71 proven. 1 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-01-06 19:15:11,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:15:11,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-01-06 19:15:11,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565618136] [2021-01-06 19:15:11,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 19:15:11,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:11,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 19:15:11,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 19:15:11,692 INFO L87 Difference]: Start difference. First operand 50 states and 78 transitions. Second operand 6 states. [2021-01-06 19:15:11,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:11,755 INFO L93 Difference]: Finished difference Result 98 states and 185 transitions. [2021-01-06 19:15:11,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 19:15:11,756 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2021-01-06 19:15:11,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:11,757 INFO L225 Difference]: With dead ends: 98 [2021-01-06 19:15:11,758 INFO L226 Difference]: Without dead ends: 53 [2021-01-06 19:15:11,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 19:15:11,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-01-06 19:15:11,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-01-06 19:15:11,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-01-06 19:15:11,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 84 transitions. [2021-01-06 19:15:11,772 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 84 transitions. Word has length 59 [2021-01-06 19:15:11,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:11,773 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 84 transitions. [2021-01-06 19:15:11,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 19:15:11,773 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 84 transitions. [2021-01-06 19:15:11,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-01-06 19:15:11,775 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:11,775 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:11,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-01-06 19:15:11,990 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:11,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:11,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1971944696, now seen corresponding path program 5 times [2021-01-06 19:15:11,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:11,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995197282] [2021-01-06 19:15:11,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:12,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:12,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-01-06 19:15:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:12,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:12,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:12,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:12,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:12,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:12,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:12,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-01-06 19:15:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:12,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-01-06 19:15:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:12,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:12,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-01-06 19:15:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:12,280 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 63 proven. 63 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-01-06 19:15:12,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995197282] [2021-01-06 19:15:12,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651534017] [2021-01-06 19:15:12,281 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:12,350 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-01-06 19:15:12,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:15:12,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 19:15:12,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:12,664 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 97 proven. 37 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-01-06 19:15:12,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:15:12,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 19 [2021-01-06 19:15:12,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562674670] [2021-01-06 19:15:12,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-06 19:15:12,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:12,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-06 19:15:12,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-01-06 19:15:12,669 INFO L87 Difference]: Start difference. First operand 53 states and 84 transitions. Second operand 19 states. [2021-01-06 19:15:13,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:13,312 INFO L93 Difference]: Finished difference Result 86 states and 171 transitions. [2021-01-06 19:15:13,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-01-06 19:15:13,313 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 72 [2021-01-06 19:15:13,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:13,313 INFO L225 Difference]: With dead ends: 86 [2021-01-06 19:15:13,314 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 19:15:13,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=245, Invalid=1015, Unknown=0, NotChecked=0, Total=1260 [2021-01-06 19:15:13,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 19:15:13,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 19:15:13,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 19:15:13,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 19:15:13,319 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 72 [2021-01-06 19:15:13,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:13,319 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 19:15:13,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-01-06 19:15:13,319 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 19:15:13,319 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 19:15:13,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:13,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 19:15:13,993 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 19:15:13,993 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 19:15:13,993 INFO L189 CegarLoopUtils]: For program point L30(lines 30 34) no Hoare annotation was computed. [2021-01-06 19:15:13,993 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 19:15:13,993 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 19:15:13,994 INFO L192 CegarLoopUtils]: At program point L28(lines 28 48) the Hoare annotation is: true [2021-01-06 19:15:13,994 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 46) no Hoare annotation was computed. [2021-01-06 19:15:13,994 INFO L189 CegarLoopUtils]: For program point L46(line 46) no Hoare annotation was computed. [2021-01-06 19:15:13,994 INFO L189 CegarLoopUtils]: For program point L43(lines 43 47) no Hoare annotation was computed. [2021-01-06 19:15:13,994 INFO L185 CegarLoopUtils]: At program point L42(line 42) the Hoare annotation is: (<= 0 ULTIMATE.start_main_~n~0) [2021-01-06 19:15:13,994 INFO L189 CegarLoopUtils]: For program point L42-1(line 42) no Hoare annotation was computed. [2021-01-06 19:15:13,995 INFO L189 CegarLoopUtils]: For program point L36(lines 36 41) no Hoare annotation was computed. [2021-01-06 19:15:13,995 INFO L189 CegarLoopUtils]: For program point ackermannEXIT(lines 17 25) no Hoare annotation was computed. [2021-01-06 19:15:13,995 INFO L185 CegarLoopUtils]: At program point L24(line 24) the Hoare annotation is: (and (= ackermann_~m |ackermann_#in~m|) (= ackermann_~n |ackermann_#in~n|) (not (= |ackermann_#in~m| 0))) [2021-01-06 19:15:13,995 INFO L189 CegarLoopUtils]: For program point L24-1(line 24) no Hoare annotation was computed. [2021-01-06 19:15:13,995 INFO L185 CegarLoopUtils]: At program point L22(line 22) the Hoare annotation is: (and (= |ackermann_#in~n| 0) (= ackermann_~m |ackermann_#in~m|) (= ackermann_~n |ackermann_#in~n|) (not (= |ackermann_#in~m| 0))) [2021-01-06 19:15:13,995 INFO L185 CegarLoopUtils]: At program point L24-2(line 24) the Hoare annotation is: (let ((.cse0 (<= 1 |ackermann_#in~m|)) (.cse1 (= ackermann_~m |ackermann_#in~m|)) (.cse2 (= ackermann_~n |ackermann_#in~n|))) (or (and (<= 2 |ackermann_#t~ret8|) (<= ackermann_~m 1) .cse0 .cse1 .cse2) (and (<= 3 |ackermann_#t~ret8|) .cse0 .cse1 .cse2))) [2021-01-06 19:15:13,996 INFO L192 CegarLoopUtils]: At program point ackermannENTRY(lines 17 25) the Hoare annotation is: true [2021-01-06 19:15:13,996 INFO L189 CegarLoopUtils]: For program point L21(lines 21 23) no Hoare annotation was computed. [2021-01-06 19:15:13,996 INFO L189 CegarLoopUtils]: For program point L22-1(line 22) no Hoare annotation was computed. [2021-01-06 19:15:13,996 INFO L189 CegarLoopUtils]: For program point L24-3(line 24) no Hoare annotation was computed. [2021-01-06 19:15:13,996 INFO L189 CegarLoopUtils]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-01-06 19:15:13,996 INFO L189 CegarLoopUtils]: For program point ackermannFINAL(lines 17 25) no Hoare annotation was computed. [2021-01-06 19:15:14,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 07:15:14 BoogieIcfgContainer [2021-01-06 19:15:14,007 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 19:15:14,008 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 19:15:14,008 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 19:15:14,008 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 19:15:14,008 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 07:15:06" (3/4) ... [2021-01-06 19:15:14,012 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 19:15:14,020 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ackermann [2021-01-06 19:15:14,024 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-01-06 19:15:14,025 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-01-06 19:15:14,025 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 19:15:14,025 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 19:15:14,066 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/recursive/Ackermann01-2.c-witness.graphml [2021-01-06 19:15:14,066 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 19:15:14,072 INFO L168 Benchmark]: Toolchain (without parser) took 8623.47 ms. Allocated memory was 156.2 MB in the beginning and 225.4 MB in the end (delta: 69.2 MB). Free memory was 131.7 MB in the beginning and 152.8 MB in the end (delta: -21.1 MB). Peak memory consumption was 49.3 MB. Max. memory is 8.0 GB. [2021-01-06 19:15:14,072 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 156.2 MB. Free memory was 129.1 MB in the beginning and 129.0 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 19:15:14,074 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.54 ms. Allocated memory is still 156.2 MB. Free memory was 131.5 MB in the beginning and 122.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-06 19:15:14,075 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.52 ms. Allocated memory is still 156.2 MB. Free memory was 122.1 MB in the beginning and 120.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 19:15:14,075 INFO L168 Benchmark]: Boogie Preprocessor took 22.70 ms. Allocated memory is still 156.2 MB. Free memory was 120.8 MB in the beginning and 119.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 19:15:14,076 INFO L168 Benchmark]: RCFGBuilder took 470.16 ms. Allocated memory is still 156.2 MB. Free memory was 119.7 MB in the beginning and 106.6 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-01-06 19:15:14,076 INFO L168 Benchmark]: TraceAbstraction took 7742.67 ms. Allocated memory was 156.2 MB in the beginning and 225.4 MB in the end (delta: 69.2 MB). Free memory was 106.2 MB in the beginning and 155.5 MB in the end (delta: -49.2 MB). Peak memory consumption was 99.1 MB. Max. memory is 8.0 GB. [2021-01-06 19:15:14,082 INFO L168 Benchmark]: Witness Printer took 59.02 ms. Allocated memory is still 225.4 MB. Free memory was 155.5 MB in the beginning and 152.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 19:15:14,088 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 156.2 MB. Free memory was 129.1 MB in the beginning and 129.0 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 282.54 ms. Allocated memory is still 156.2 MB. Free memory was 131.5 MB in the beginning and 122.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 36.52 ms. Allocated memory is still 156.2 MB. Free memory was 122.1 MB in the beginning and 120.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 22.70 ms. Allocated memory is still 156.2 MB. Free memory was 120.8 MB in the beginning and 119.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 470.16 ms. Allocated memory is still 156.2 MB. Free memory was 119.7 MB in the beginning and 106.6 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7742.67 ms. Allocated memory was 156.2 MB in the beginning and 225.4 MB in the end (delta: 69.2 MB). Free memory was 106.2 MB in the beginning and 155.5 MB in the end (delta: -49.2 MB). Peak memory consumption was 99.1 MB. Max. memory is 8.0 GB. * Witness Printer took 59.02 ms. Allocated memory is still 225.4 MB. Free memory was 155.5 MB in the beginning and 152.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 46]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.1s, OverallIterations: 8, TraceHistogramMax: 10, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 149 SDtfs, 196 SDslu, 636 SDs, 0 SdLazy, 1538 SolverSat, 301 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 475 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=7, 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, 8 MinimizatonAttempts, 48 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 110 PreInvPairs, 136 NumberOfFragments, 60 HoareAnnotationTreeSize, 110 FomulaSimplifications, 6992 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 6 FomulaSimplificationsInter, 290 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 563 NumberOfCodeBlocks, 517 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 549 ConstructedInterpolants, 0 QuantifiedInterpolants, 48425 SizeOfPredicates, 16 NumberOfNonLiveVariables, 771 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 776/948 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...