/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy CAMEL_NO_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/gcd01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 21:13:12,410 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 21:13:12,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 21:13:12,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 21:13:12,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 21:13:12,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 21:13:12,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 21:13:12,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 21:13:12,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 21:13:12,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 21:13:12,432 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 21:13:12,434 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 21:13:12,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 21:13:12,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 21:13:12,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 21:13:12,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 21:13:12,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 21:13:12,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 21:13:12,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 21:13:12,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 21:13:12,443 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 21:13:12,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 21:13:12,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 21:13:12,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 21:13:12,448 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 21:13:12,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 21:13:12,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 21:13:12,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 21:13:12,461 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-19 21:13:12,475 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 21:13:12,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 21:13:12,476 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 21:13:12,477 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 21:13:12,477 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 21:13:12,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 21:13:12,477 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 21:13:12,477 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 21:13:12,478 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 21:13:12,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 21:13:12,478 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 21:13:12,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 21:13:12,478 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 21:13:12,478 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 21:13:12,479 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 21:13:12,479 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 21:13:12,479 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 21:13:12,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 21:13:12,479 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 21:13:12,480 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 21:13:12,480 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 21:13:12,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 21:13:12,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 21:13:12,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 21:13:12,481 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 21:13:12,481 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 21:13:12,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 21:13:12,481 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 21:13:12,481 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 21:13:12,482 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_NO_AM [2020-07-19 21:13:12,827 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 21:13:12,846 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 21:13:12,851 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 21:13:12,853 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 21:13:12,853 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 21:13:12,854 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/gcd01-1.c [2020-07-19 21:13:12,913 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25a90e6ee/980636771b5e43c3a16d2e1c24ce595c/FLAG39031955c [2020-07-19 21:13:13,325 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 21:13:13,326 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/gcd01-1.c [2020-07-19 21:13:13,332 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25a90e6ee/980636771b5e43c3a16d2e1c24ce595c/FLAG39031955c [2020-07-19 21:13:13,689 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25a90e6ee/980636771b5e43c3a16d2e1c24ce595c [2020-07-19 21:13:13,700 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 21:13:13,703 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 21:13:13,706 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 21:13:13,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 21:13:13,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 21:13:13,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:13:13" (1/1) ... [2020-07-19 21:13:13,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15ad3b8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:13:13, skipping insertion in model container [2020-07-19 21:13:13,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:13:13" (1/1) ... [2020-07-19 21:13:13,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 21:13:13,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 21:13:13,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:13:13,906 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 21:13:13,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:13:13,939 INFO L208 MainTranslator]: Completed translation [2020-07-19 21:13:13,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:13:13 WrapperNode [2020-07-19 21:13:13,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 21:13:13,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 21:13:13,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 21:13:13,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 21:13:13,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:13:13" (1/1) ... [2020-07-19 21:13:13,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:13:13" (1/1) ... [2020-07-19 21:13:13,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:13:13" (1/1) ... [2020-07-19 21:13:13,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:13:13" (1/1) ... [2020-07-19 21:13:13,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:13:13" (1/1) ... [2020-07-19 21:13:13,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:13:13" (1/1) ... [2020-07-19 21:13:13,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:13:13" (1/1) ... [2020-07-19 21:13:13,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 21:13:13,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 21:13:13,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 21:13:13,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 21:13:13,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:13:13" (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 [2020-07-19 21:13:14,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 21:13:14,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 21:13:14,182 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2020-07-19 21:13:14,182 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 21:13:14,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 21:13:14,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 21:13:14,183 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2020-07-19 21:13:14,183 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 21:13:14,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 21:13:14,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 21:13:14,362 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 21:13:14,363 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-19 21:13:14,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:13:14 BoogieIcfgContainer [2020-07-19 21:13:14,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 21:13:14,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 21:13:14,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 21:13:14,373 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 21:13:14,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:13:13" (1/3) ... [2020-07-19 21:13:14,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a7ea409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:13:14, skipping insertion in model container [2020-07-19 21:13:14,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:13:13" (2/3) ... [2020-07-19 21:13:14,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a7ea409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:13:14, skipping insertion in model container [2020-07-19 21:13:14,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:13:14" (3/3) ... [2020-07-19 21:13:14,378 INFO L109 eAbstractionObserver]: Analyzing ICFG gcd01-1.c [2020-07-19 21:13:14,388 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 21:13:14,394 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 21:13:14,408 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 21:13:14,436 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 21:13:14,436 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 21:13:14,436 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 21:13:14,436 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 21:13:14,436 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 21:13:14,437 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 21:13:14,437 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 21:13:14,437 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 21:13:14,453 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-07-19 21:13:14,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-19 21:13:14,460 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:13:14,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:13:14,462 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:13:14,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:13:14,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1001932622, now seen corresponding path program 1 times [2020-07-19 21:13:14,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:13:14,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990585268] [2020-07-19 21:13:14,475 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@75d52264 [2020-07-19 21:13:14,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:13:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:13:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:13:14,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:13:14,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990585268] [2020-07-19 21:13:14,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:13:14,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-19 21:13:14,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779280829] [2020-07-19 21:13:14,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-19 21:13:14,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:13:14,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-19 21:13:14,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-19 21:13:14,749 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 6 states. [2020-07-19 21:13:14,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:13:14,920 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2020-07-19 21:13:14,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-19 21:13:14,923 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-07-19 21:13:14,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:13:14,934 INFO L225 Difference]: With dead ends: 40 [2020-07-19 21:13:14,934 INFO L226 Difference]: Without dead ends: 24 [2020-07-19 21:13:14,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-07-19 21:13:14,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-19 21:13:14,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-07-19 21:13:14,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-19 21:13:14,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2020-07-19 21:13:14,985 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 15 [2020-07-19 21:13:14,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:13:14,986 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2020-07-19 21:13:14,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-19 21:13:14,986 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2020-07-19 21:13:14,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-19 21:13:14,988 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:13:14,988 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:13:14,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 21:13:14,989 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:13:14,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:13:14,990 INFO L82 PathProgramCache]: Analyzing trace with hash -423841111, now seen corresponding path program 1 times [2020-07-19 21:13:14,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:13:14,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498676838] [2020-07-19 21:13:14,991 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@75d52264 [2020-07-19 21:13:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:13:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:13:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:13:15,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:13:15,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498676838] [2020-07-19 21:13:15,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:13:15,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-19 21:13:15,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550477783] [2020-07-19 21:13:15,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-19 21:13:15,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:13:15,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-19 21:13:15,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-19 21:13:15,101 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 6 states. [2020-07-19 21:13:15,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:13:15,158 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2020-07-19 21:13:15,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-19 21:13:15,159 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-07-19 21:13:15,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:13:15,160 INFO L225 Difference]: With dead ends: 30 [2020-07-19 21:13:15,161 INFO L226 Difference]: Without dead ends: 26 [2020-07-19 21:13:15,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-19 21:13:15,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-19 21:13:15,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-07-19 21:13:15,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-19 21:13:15,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2020-07-19 21:13:15,171 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 16 [2020-07-19 21:13:15,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:13:15,172 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2020-07-19 21:13:15,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-19 21:13:15,172 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2020-07-19 21:13:15,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-19 21:13:15,174 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:13:15,174 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:13:15,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 21:13:15,175 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:13:15,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:13:15,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1280495258, now seen corresponding path program 1 times [2020-07-19 21:13:15,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:13:15,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585201382] [2020-07-19 21:13:15,176 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@75d52264 [2020-07-19 21:13:15,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:13:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:13:15,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:13:15,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:13:15,342 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-19 21:13:15,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585201382] [2020-07-19 21:13:15,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:13:15,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-19 21:13:15,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597767206] [2020-07-19 21:13:15,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-19 21:13:15,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:13:15,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-19 21:13:15,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-19 21:13:15,345 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 6 states. [2020-07-19 21:13:15,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:13:15,471 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2020-07-19 21:13:15,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-19 21:13:15,472 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-07-19 21:13:15,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:13:15,474 INFO L225 Difference]: With dead ends: 36 [2020-07-19 21:13:15,474 INFO L226 Difference]: Without dead ends: 28 [2020-07-19 21:13:15,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-07-19 21:13:15,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-19 21:13:15,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-07-19 21:13:15,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-19 21:13:15,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2020-07-19 21:13:15,485 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 23 [2020-07-19 21:13:15,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:13:15,486 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2020-07-19 21:13:15,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-19 21:13:15,486 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2020-07-19 21:13:15,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-19 21:13:15,487 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:13:15,488 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:13:15,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-19 21:13:15,488 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:13:15,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:13:15,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1668712292, now seen corresponding path program 1 times [2020-07-19 21:13:15,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:13:15,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119017304] [2020-07-19 21:13:15,490 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@75d52264 [2020-07-19 21:13:15,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:13:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:13:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:13:15,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:13:15,670 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-19 21:13:15,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119017304] [2020-07-19 21:13:15,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:13:15,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-19 21:13:15,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852596728] [2020-07-19 21:13:15,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-19 21:13:15,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:13:15,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-19 21:13:15,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-07-19 21:13:15,675 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 7 states. [2020-07-19 21:13:15,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:13:15,812 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2020-07-19 21:13:15,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-19 21:13:15,813 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-07-19 21:13:15,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:13:15,814 INFO L225 Difference]: With dead ends: 36 [2020-07-19 21:13:15,814 INFO L226 Difference]: Without dead ends: 26 [2020-07-19 21:13:15,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-07-19 21:13:15,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-19 21:13:15,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-07-19 21:13:15,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-19 21:13:15,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-07-19 21:13:15,823 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 23 [2020-07-19 21:13:15,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:13:15,823 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-07-19 21:13:15,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-19 21:13:15,823 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-07-19 21:13:15,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-19 21:13:15,825 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:13:15,825 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:13:15,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-19 21:13:15,825 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:13:15,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:13:15,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1139697511, now seen corresponding path program 1 times [2020-07-19 21:13:15,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:13:15,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361999866] [2020-07-19 21:13:15,826 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@75d52264 [2020-07-19 21:13:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:13:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:13:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:13:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:13:15,899 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-19 21:13:15,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361999866] [2020-07-19 21:13:15,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:13:15,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-19 21:13:15,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553010769] [2020-07-19 21:13:15,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-19 21:13:15,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:13:15,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-19 21:13:15,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-19 21:13:15,901 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 7 states. [2020-07-19 21:13:15,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:13:15,946 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2020-07-19 21:13:15,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-19 21:13:15,947 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-07-19 21:13:15,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:13:15,948 INFO L225 Difference]: With dead ends: 31 [2020-07-19 21:13:15,949 INFO L226 Difference]: Without dead ends: 27 [2020-07-19 21:13:15,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-07-19 21:13:15,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-07-19 21:13:15,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-07-19 21:13:15,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-19 21:13:15,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-07-19 21:13:15,956 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 24 [2020-07-19 21:13:15,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:13:15,956 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-07-19 21:13:15,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-19 21:13:15,956 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-07-19 21:13:15,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-19 21:13:15,958 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:13:15,958 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:13:15,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-19 21:13:15,958 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:13:15,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:13:15,959 INFO L82 PathProgramCache]: Analyzing trace with hash 99153721, now seen corresponding path program 1 times [2020-07-19 21:13:15,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:13:15,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637430790] [2020-07-19 21:13:15,960 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@75d52264 [2020-07-19 21:13:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:13:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:13:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:13:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:13:16,028 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-07-19 21:13:16,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637430790] [2020-07-19 21:13:16,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:13:16,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-19 21:13:16,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937625906] [2020-07-19 21:13:16,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-19 21:13:16,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:13:16,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-19 21:13:16,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-19 21:13:16,031 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 7 states. [2020-07-19 21:13:16,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:13:16,076 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2020-07-19 21:13:16,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-19 21:13:16,076 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-07-19 21:13:16,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:13:16,077 INFO L225 Difference]: With dead ends: 34 [2020-07-19 21:13:16,078 INFO L226 Difference]: Without dead ends: 30 [2020-07-19 21:13:16,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-07-19 21:13:16,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-19 21:13:16,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-07-19 21:13:16,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-19 21:13:16,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2020-07-19 21:13:16,085 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 24 [2020-07-19 21:13:16,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:13:16,085 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2020-07-19 21:13:16,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-19 21:13:16,086 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2020-07-19 21:13:16,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-19 21:13:16,087 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:13:16,087 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:13:16,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-19 21:13:16,088 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:13:16,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:13:16,088 INFO L82 PathProgramCache]: Analyzing trace with hash 10057033, now seen corresponding path program 1 times [2020-07-19 21:13:16,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:13:16,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934800454] [2020-07-19 21:13:16,089 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@75d52264 [2020-07-19 21:13:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:13:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:13:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:13:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:13:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:13:16,203 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-07-19 21:13:16,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934800454] [2020-07-19 21:13:16,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:13:16,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-19 21:13:16,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689577557] [2020-07-19 21:13:16,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-19 21:13:16,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:13:16,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-19 21:13:16,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-07-19 21:13:16,206 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 8 states. [2020-07-19 21:13:16,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:13:16,261 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2020-07-19 21:13:16,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-19 21:13:16,262 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-07-19 21:13:16,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:13:16,263 INFO L225 Difference]: With dead ends: 30 [2020-07-19 21:13:16,263 INFO L226 Difference]: Without dead ends: 0 [2020-07-19 21:13:16,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-07-19 21:13:16,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-19 21:13:16,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-19 21:13:16,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-19 21:13:16,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-19 21:13:16,265 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2020-07-19 21:13:16,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:13:16,265 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-19 21:13:16,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-19 21:13:16,265 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-19 21:13:16,265 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-19 21:13:16,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-19 21:13:16,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-19 21:13:16,332 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-19 21:13:16,332 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-19 21:13:16,333 INFO L268 CegarLoopResult]: For program point gcdFINAL(lines 15 26) no Hoare annotation was computed. [2020-07-19 21:13:16,333 INFO L268 CegarLoopResult]: For program point gcdEXIT(lines 15 26) no Hoare annotation was computed. [2020-07-19 21:13:16,333 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (<= 1 gcd_~y1) (= gcd_~y1 |gcd_#in~y1|) (= gcd_~y2 |gcd_#in~y2|) (< gcd_~y1 gcd_~y2)) [2020-07-19 21:13:16,333 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-07-19 21:13:16,333 INFO L271 CegarLoopResult]: At program point gcdENTRY(lines 15 26) the Hoare annotation is: true [2020-07-19 21:13:16,334 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (<= (+ gcd_~y2 1) gcd_~y1) (<= 1 gcd_~y2) (= gcd_~y1 |gcd_#in~y1|) (= gcd_~y2 |gcd_#in~y2|)) [2020-07-19 21:13:16,334 INFO L268 CegarLoopResult]: For program point L22(lines 22 24) no Hoare annotation was computed. [2020-07-19 21:13:16,334 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-07-19 21:13:16,334 INFO L268 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-07-19 21:13:16,334 INFO L268 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-07-19 21:13:16,334 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-19 21:13:16,334 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-19 21:13:16,334 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-19 21:13:16,335 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-19 21:13:16,335 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2020-07-19 21:13:16,335 INFO L268 CegarLoopResult]: For program point L30(lines 30 32) no Hoare annotation was computed. [2020-07-19 21:13:16,335 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 28 43) the Hoare annotation is: true [2020-07-19 21:13:16,335 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 28 43) no Hoare annotation was computed. [2020-07-19 21:13:16,335 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-07-19 21:13:16,335 INFO L268 CegarLoopResult]: For program point L38(lines 38 42) no Hoare annotation was computed. [2020-07-19 21:13:16,336 INFO L264 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (and (<= 1 main_~m~0) (<= 1 main_~n~0)) [2020-07-19 21:13:16,336 INFO L268 CegarLoopResult]: For program point L38-1(lines 28 43) no Hoare annotation was computed. [2020-07-19 21:13:16,336 INFO L268 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2020-07-19 21:13:16,336 INFO L268 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2020-07-19 21:13:16,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:13:16 BoogieIcfgContainer [2020-07-19 21:13:16,342 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 21:13:16,345 INFO L168 Benchmark]: Toolchain (without parser) took 2642.15 ms. Allocated memory was 140.5 MB in the beginning and 235.4 MB in the end (delta: 94.9 MB). Free memory was 102.4 MB in the beginning and 116.9 MB in the end (delta: -14.5 MB). Peak memory consumption was 80.4 MB. Max. memory is 7.1 GB. [2020-07-19 21:13:16,345 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-19 21:13:16,346 INFO L168 Benchmark]: CACSL2BoogieTranslator took 234.32 ms. Allocated memory is still 140.5 MB. Free memory was 102.2 MB in the beginning and 92.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-19 21:13:16,347 INFO L168 Benchmark]: Boogie Preprocessor took 35.36 ms. Allocated memory is still 140.5 MB. Free memory was 92.6 MB in the beginning and 91.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-19 21:13:16,348 INFO L168 Benchmark]: RCFGBuilder took 391.56 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 91.2 MB in the beginning and 168.5 MB in the end (delta: -77.2 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2020-07-19 21:13:16,349 INFO L168 Benchmark]: TraceAbstraction took 1972.99 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 167.8 MB in the beginning and 116.9 MB in the end (delta: 50.9 MB). Peak memory consumption was 83.9 MB. Max. memory is 7.1 GB. [2020-07-19 21:13:16,353 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 234.32 ms. Allocated memory is still 140.5 MB. Free memory was 102.2 MB in the beginning and 92.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.36 ms. Allocated memory is still 140.5 MB. Free memory was 92.6 MB in the beginning and 91.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 391.56 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 91.2 MB in the beginning and 168.5 MB in the end (delta: -77.2 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1972.99 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 167.8 MB in the beginning and 116.9 MB in the end (delta: 50.9 MB). Peak memory consumption was 83.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 142 SDtfs, 91 SDslu, 475 SDs, 0 SdLazy, 273 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 107 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 8 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 14 NumberOfFragments, 40 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 10 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 157 NumberOfCodeBlocks, 157 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 150 ConstructedInterpolants, 0 QuantifiedInterpolants, 6864 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 34/34 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...