/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Fibonacci01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:54:41,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:54:41,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:54:41,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:54:41,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:54:41,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:54:41,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:54:41,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:54:41,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:54:41,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:54:41,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:54:41,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:54:41,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:54:41,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:54:41,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:54:41,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:54:41,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:54:41,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:54:41,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:54:41,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:54:41,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:54:41,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:54:41,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:54:41,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:54:41,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 18:54:41,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:54:41,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:54:41,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:54:41,729 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 18:54:41,769 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:54:41,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:54:41,774 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:54:41,774 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:54:41,774 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:54:41,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:54:41,775 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:54:41,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:54:41,775 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:54:41,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:54:41,775 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:54:41,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:54:41,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:54:41,776 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:54:41,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:54:41,776 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:54:41,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:54:41,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:54:41,780 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:54:41,780 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:54:41,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:54:41,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:54:41,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:54:41,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:54:41,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:54:41,781 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:54:41,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:54:41,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:54:41,782 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:54:41,782 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-08-21 18:54:42,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:54:42,147 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:54:42,150 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:54:42,151 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:54:42,152 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:54:42,153 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci01-1.c [2020-08-21 18:54:42,230 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e956f727/70a0dce5a5ec4f738ba4b0924aa8e89e/FLAGb03011863 [2020-08-21 18:54:42,681 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:54:42,682 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Fibonacci01-1.c [2020-08-21 18:54:42,689 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e956f727/70a0dce5a5ec4f738ba4b0924aa8e89e/FLAGb03011863 [2020-08-21 18:54:43,065 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e956f727/70a0dce5a5ec4f738ba4b0924aa8e89e [2020-08-21 18:54:43,076 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:54:43,078 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:54:43,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:54:43,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:54:43,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:54:43,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:54:43" (1/1) ... [2020-08-21 18:54:43,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12d8d2ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:43, skipping insertion in model container [2020-08-21 18:54:43,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:54:43" (1/1) ... [2020-08-21 18:54:43,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:54:43,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:54:43,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:54:43,314 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:54:43,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:54:43,340 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:54:43,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:43 WrapperNode [2020-08-21 18:54:43,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:54:43,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:54:43,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:54:43,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:54:43,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:43" (1/1) ... [2020-08-21 18:54:43,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:43" (1/1) ... [2020-08-21 18:54:43,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:43" (1/1) ... [2020-08-21 18:54:43,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:43" (1/1) ... [2020-08-21 18:54:43,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:43" (1/1) ... [2020-08-21 18:54:43,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:43" (1/1) ... [2020-08-21 18:54:43,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:43" (1/1) ... [2020-08-21 18:54:43,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:54:43,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:54:43,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:54:43,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:54:43,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:54:43,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:54:43,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:54:43,497 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-08-21 18:54:43,497 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:54:43,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:54:43,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 18:54:43,498 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-08-21 18:54:43,498 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:54:43,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:54:43,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:54:43,684 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:54:43,684 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 18:54:43,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:54:43 BoogieIcfgContainer [2020-08-21 18:54:43,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:54:43,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:54:43,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:54:43,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:54:43,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:54:43" (1/3) ... [2020-08-21 18:54:43,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b389e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:54:43, skipping insertion in model container [2020-08-21 18:54:43,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:43" (2/3) ... [2020-08-21 18:54:43,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b389e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:54:43, skipping insertion in model container [2020-08-21 18:54:43,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:54:43" (3/3) ... [2020-08-21 18:54:43,697 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci01-1.c [2020-08-21 18:54:43,708 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:54:43,716 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:54:43,733 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:54:43,762 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:54:43,763 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:54:43,763 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:54:43,763 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:54:43,763 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:54:43,763 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:54:43,763 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:54:43,764 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:54:43,788 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-08-21 18:54:43,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-21 18:54:43,796 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:54:43,797 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:54:43,798 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:54:43,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:54:43,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1900973920, now seen corresponding path program 1 times [2020-08-21 18:54:43,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:54:43,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934672046] [2020-08-21 18:54:43,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:54:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:43,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:54:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:44,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:54:44,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:44,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:54:44,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934672046] [2020-08-21 18:54:44,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:54:44,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 18:54:44,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188329286] [2020-08-21 18:54:44,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 18:54:44,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:54:44,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 18:54:44,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 18:54:44,112 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 6 states. [2020-08-21 18:54:44,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:54:44,257 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2020-08-21 18:54:44,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 18:54:44,260 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-08-21 18:54:44,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:54:44,270 INFO L225 Difference]: With dead ends: 36 [2020-08-21 18:54:44,271 INFO L226 Difference]: Without dead ends: 22 [2020-08-21 18:54:44,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 18:54:44,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-08-21 18:54:44,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-08-21 18:54:44,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-08-21 18:54:44,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-08-21 18:54:44,313 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 14 [2020-08-21 18:54:44,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:54:44,313 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-08-21 18:54:44,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 18:54:44,314 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-08-21 18:54:44,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-21 18:54:44,316 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:54:44,316 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:54:44,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:54:44,317 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:54:44,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:54:44,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1203666899, now seen corresponding path program 1 times [2020-08-21 18:54:44,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:54:44,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772336257] [2020-08-21 18:54:44,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:54:44,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:44,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:54:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:44,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:54:44,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:44,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 18:54:44,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:44,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:54:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:44,454 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 18:54:44,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772336257] [2020-08-21 18:54:44,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:54:44,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-21 18:54:44,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694704919] [2020-08-21 18:54:44,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 18:54:44,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:54:44,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 18:54:44,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 18:54:44,459 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 6 states. [2020-08-21 18:54:44,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:54:44,549 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2020-08-21 18:54:44,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 18:54:44,549 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-08-21 18:54:44,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:54:44,551 INFO L225 Difference]: With dead ends: 39 [2020-08-21 18:54:44,551 INFO L226 Difference]: Without dead ends: 24 [2020-08-21 18:54:44,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:54:44,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-08-21 18:54:44,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-08-21 18:54:44,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-08-21 18:54:44,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-08-21 18:54:44,561 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 27 [2020-08-21 18:54:44,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:54:44,562 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-08-21 18:54:44,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 18:54:44,562 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-08-21 18:54:44,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-21 18:54:44,564 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:54:44,564 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:54:44,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:54:44,565 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:54:44,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:54:44,565 INFO L82 PathProgramCache]: Analyzing trace with hash -603082491, now seen corresponding path program 1 times [2020-08-21 18:54:44,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:54:44,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370211509] [2020-08-21 18:54:44,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:54:44,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:44,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:54:44,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:44,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:54:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:44,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 18:54:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:44,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:54:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:44,838 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-21 18:54:44,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370211509] [2020-08-21 18:54:44,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:54:44,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 18:54:44,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241601692] [2020-08-21 18:54:44,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 18:54:44,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:54:44,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 18:54:44,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-21 18:54:44,844 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 10 states. [2020-08-21 18:54:45,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:54:45,069 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2020-08-21 18:54:45,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 18:54:45,069 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-08-21 18:54:45,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:54:45,072 INFO L225 Difference]: With dead ends: 34 [2020-08-21 18:54:45,072 INFO L226 Difference]: Without dead ends: 30 [2020-08-21 18:54:45,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-08-21 18:54:45,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-21 18:54:45,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-08-21 18:54:45,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-21 18:54:45,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2020-08-21 18:54:45,082 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 28 [2020-08-21 18:54:45,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:54:45,083 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2020-08-21 18:54:45,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 18:54:45,083 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2020-08-21 18:54:45,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-21 18:54:45,085 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:54:45,085 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:54:45,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 18:54:45,086 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:54:45,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:54:45,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1293014720, now seen corresponding path program 2 times [2020-08-21 18:54:45,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:54:45,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398224999] [2020-08-21 18:54:45,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:54:45,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:45,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:54:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:45,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:54:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:45,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 18:54:45,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:45,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:54:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:45,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 18:54:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:45,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:54:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:45,216 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-21 18:54:45,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398224999] [2020-08-21 18:54:45,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:54:45,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-21 18:54:45,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547570486] [2020-08-21 18:54:45,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 18:54:45,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:54:45,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 18:54:45,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 18:54:45,220 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand 6 states. [2020-08-21 18:54:45,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:54:45,329 INFO L93 Difference]: Finished difference Result 54 states and 78 transitions. [2020-08-21 18:54:45,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 18:54:45,330 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2020-08-21 18:54:45,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:54:45,332 INFO L225 Difference]: With dead ends: 54 [2020-08-21 18:54:45,332 INFO L226 Difference]: Without dead ends: 31 [2020-08-21 18:54:45,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-08-21 18:54:45,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-08-21 18:54:45,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-08-21 18:54:45,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-21 18:54:45,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2020-08-21 18:54:45,341 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 42 [2020-08-21 18:54:45,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:54:45,342 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2020-08-21 18:54:45,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 18:54:45,342 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2020-08-21 18:54:45,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-21 18:54:45,344 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:54:45,344 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:54:45,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 18:54:45,345 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:54:45,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:54:45,345 INFO L82 PathProgramCache]: Analyzing trace with hash -2046185202, now seen corresponding path program 3 times [2020-08-21 18:54:45,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:54:45,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257895578] [2020-08-21 18:54:45,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:54:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:45,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:54:45,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:45,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:54:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:45,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 18:54:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:45,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 18:54:45,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:45,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:54:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:45,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 18:54:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:45,494 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-21 18:54:45,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257895578] [2020-08-21 18:54:45,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:54:45,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 18:54:45,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580319974] [2020-08-21 18:54:45,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 18:54:45,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:54:45,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 18:54:45,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-21 18:54:45,497 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand 7 states. [2020-08-21 18:54:45,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:54:45,600 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-08-21 18:54:45,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 18:54:45,601 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-08-21 18:54:45,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:54:45,603 INFO L225 Difference]: With dead ends: 55 [2020-08-21 18:54:45,603 INFO L226 Difference]: Without dead ends: 31 [2020-08-21 18:54:45,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-08-21 18:54:45,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-08-21 18:54:45,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-08-21 18:54:45,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-21 18:54:45,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-08-21 18:54:45,611 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 41 [2020-08-21 18:54:45,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:54:45,612 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-08-21 18:54:45,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 18:54:45,612 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-08-21 18:54:45,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-21 18:54:45,614 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:54:45,614 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:54:45,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 18:54:45,615 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:54:45,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:54:45,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1391487784, now seen corresponding path program 4 times [2020-08-21 18:54:45,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:54:45,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61491716] [2020-08-21 18:54:45,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:54:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:45,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:54:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:45,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:54:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:45,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 18:54:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:45,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 18:54:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:45,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:54:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:45,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 18:54:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:45,869 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-08-21 18:54:45,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61491716] [2020-08-21 18:54:45,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:54:45,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 18:54:45,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714747648] [2020-08-21 18:54:45,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 18:54:45,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:54:45,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 18:54:45,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-21 18:54:45,875 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 12 states. [2020-08-21 18:54:46,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:54:46,127 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2020-08-21 18:54:46,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 18:54:46,128 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2020-08-21 18:54:46,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:54:46,129 INFO L225 Difference]: With dead ends: 41 [2020-08-21 18:54:46,129 INFO L226 Difference]: Without dead ends: 37 [2020-08-21 18:54:46,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2020-08-21 18:54:46,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-21 18:54:46,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2020-08-21 18:54:46,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-21 18:54:46,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2020-08-21 18:54:46,139 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 42 [2020-08-21 18:54:46,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:54:46,139 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2020-08-21 18:54:46,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 18:54:46,139 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2020-08-21 18:54:46,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-21 18:54:46,141 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:54:46,141 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:54:46,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 18:54:46,142 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:54:46,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:54:46,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1554048393, now seen corresponding path program 5 times [2020-08-21 18:54:46,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:54:46,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128473057] [2020-08-21 18:54:46,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:54:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:46,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:54:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:46,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:54:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:46,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 18:54:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:46,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 18:54:46,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:46,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:54:46,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:46,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 18:54:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:46,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 18:54:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:46,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:54:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:46,262 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 33 proven. 35 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-21 18:54:46,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128473057] [2020-08-21 18:54:46,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:54:46,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-21 18:54:46,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080055559] [2020-08-21 18:54:46,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 18:54:46,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:54:46,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 18:54:46,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-21 18:54:46,265 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand 8 states. [2020-08-21 18:54:46,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:54:46,436 INFO L93 Difference]: Finished difference Result 70 states and 99 transitions. [2020-08-21 18:54:46,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 18:54:46,437 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 55 [2020-08-21 18:54:46,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:54:46,439 INFO L225 Difference]: With dead ends: 70 [2020-08-21 18:54:46,439 INFO L226 Difference]: Without dead ends: 44 [2020-08-21 18:54:46,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-08-21 18:54:46,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-21 18:54:46,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2020-08-21 18:54:46,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-21 18:54:46,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 53 transitions. [2020-08-21 18:54:46,448 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 53 transitions. Word has length 55 [2020-08-21 18:54:46,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:54:46,449 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 53 transitions. [2020-08-21 18:54:46,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 18:54:46,449 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 53 transitions. [2020-08-21 18:54:46,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 18:54:46,451 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:54:46,451 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:54:46,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 18:54:46,452 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:54:46,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:54:46,452 INFO L82 PathProgramCache]: Analyzing trace with hash -168777920, now seen corresponding path program 6 times [2020-08-21 18:54:46,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:54:46,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418482532] [2020-08-21 18:54:46,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:54:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:46,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:54:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:46,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:54:46,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:46,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 18:54:46,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:46,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 18:54:46,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:46,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 18:54:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:46,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:54:46,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:46,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 18:54:46,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:46,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:54:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:46,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 18:54:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:46,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 18:54:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:46,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 18:54:46,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:46,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:54:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:46,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 18:54:46,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:46,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:54:46,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:46,792 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 106 proven. 151 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2020-08-21 18:54:46,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418482532] [2020-08-21 18:54:46,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:54:46,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 18:54:46,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824710783] [2020-08-21 18:54:46,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 18:54:46,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:54:46,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 18:54:46,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 18:54:46,796 INFO L87 Difference]: Start difference. First operand 41 states and 53 transitions. Second operand 10 states. [2020-08-21 18:54:47,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:54:47,099 INFO L93 Difference]: Finished difference Result 92 states and 135 transitions. [2020-08-21 18:54:47,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 18:54:47,100 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 97 [2020-08-21 18:54:47,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:54:47,106 INFO L225 Difference]: With dead ends: 92 [2020-08-21 18:54:47,106 INFO L226 Difference]: Without dead ends: 58 [2020-08-21 18:54:47,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-08-21 18:54:47,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-08-21 18:54:47,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-08-21 18:54:47,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-08-21 18:54:47,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2020-08-21 18:54:47,128 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 97 [2020-08-21 18:54:47,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:54:47,131 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2020-08-21 18:54:47,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 18:54:47,131 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2020-08-21 18:54:47,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-21 18:54:47,133 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:54:47,133 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:54:47,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 18:54:47,134 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:54:47,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:54:47,134 INFO L82 PathProgramCache]: Analyzing trace with hash -865837754, now seen corresponding path program 7 times [2020-08-21 18:54:47,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:54:47,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605094410] [2020-08-21 18:54:47,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:54:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:47,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:54:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:47,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:54:47,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:47,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 18:54:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:47,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 18:54:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:47,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 18:54:47,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:47,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:54:47,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:47,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 18:54:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:47,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:54:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:47,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 18:54:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:47,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:54:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:47,347 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 8 proven. 98 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-08-21 18:54:47,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605094410] [2020-08-21 18:54:47,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:54:47,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 18:54:47,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724452737] [2020-08-21 18:54:47,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 18:54:47,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:54:47,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 18:54:47,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-08-21 18:54:47,350 INFO L87 Difference]: Start difference. First operand 52 states and 67 transitions. Second operand 14 states. [2020-08-21 18:54:47,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:54:47,550 INFO L93 Difference]: Finished difference Result 52 states and 67 transitions. [2020-08-21 18:54:47,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 18:54:47,552 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 69 [2020-08-21 18:54:47,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:54:47,552 INFO L225 Difference]: With dead ends: 52 [2020-08-21 18:54:47,552 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 18:54:47,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2020-08-21 18:54:47,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 18:54:47,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 18:54:47,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 18:54:47,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 18:54:47,555 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69 [2020-08-21 18:54:47,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:54:47,555 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 18:54:47,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 18:54:47,556 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 18:54:47,556 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 18:54:47,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 18:54:47,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 18:54:47,757 INFO L268 CegarLoopResult]: For program point fibonacciFINAL(lines 14 22) no Hoare annotation was computed. [2020-08-21 18:54:47,758 INFO L271 CegarLoopResult]: At program point fibonacciENTRY(lines 14 22) the Hoare annotation is: true [2020-08-21 18:54:47,758 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (= fibonacci_~n |fibonacci_#in~n|) (<= 2 |fibonacci_#in~n|)) [2020-08-21 18:54:47,758 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-08-21 18:54:47,758 INFO L264 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: (let ((.cse0 (= fibonacci_~n |fibonacci_#in~n|))) (or (and (<= |fibonacci_#in~n| 2) (<= 1 |fibonacci_#t~ret0|) .cse0 (<= 2 |fibonacci_#in~n|)) (and (<= |fibonacci_#in~n| (+ |fibonacci_#t~ret0| 2)) .cse0 (<= 3 |fibonacci_#in~n|)))) [2020-08-21 18:54:47,758 INFO L268 CegarLoopResult]: For program point fibonacciEXIT(lines 14 22) no Hoare annotation was computed. [2020-08-21 18:54:47,758 INFO L268 CegarLoopResult]: For program point L17(lines 17 21) no Hoare annotation was computed. [2020-08-21 18:54:47,759 INFO L268 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2020-08-21 18:54:47,759 INFO L268 CegarLoopResult]: For program point L15(lines 15 21) no Hoare annotation was computed. [2020-08-21 18:54:47,759 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-21 18:54:47,759 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 18:54:47,759 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 18:54:47,759 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-21 18:54:47,759 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 18:54:47,759 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 18:54:47,760 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 34) no Hoare annotation was computed. [2020-08-21 18:54:47,760 INFO L268 CegarLoopResult]: For program point L31(lines 31 35) no Hoare annotation was computed. [2020-08-21 18:54:47,760 INFO L271 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: true [2020-08-21 18:54:47,760 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 25 36) the Hoare annotation is: true [2020-08-21 18:54:47,760 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-08-21 18:54:47,760 INFO L268 CegarLoopResult]: For program point L27(lines 27 29) no Hoare annotation was computed. [2020-08-21 18:54:47,760 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 25 36) no Hoare annotation was computed. [2020-08-21 18:54:47,761 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 25 36) no Hoare annotation was computed. [2020-08-21 18:54:47,761 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-08-21 18:54:47,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 06:54:47 BoogieIcfgContainer [2020-08-21 18:54:47,767 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 18:54:47,769 INFO L168 Benchmark]: Toolchain (without parser) took 4690.89 ms. Allocated memory was 138.9 MB in the beginning and 281.5 MB in the end (delta: 142.6 MB). Free memory was 102.2 MB in the beginning and 236.2 MB in the end (delta: -134.0 MB). Peak memory consumption was 117.3 MB. Max. memory is 7.1 GB. [2020-08-21 18:54:47,770 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 18:54:47,771 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.21 ms. Allocated memory is still 138.9 MB. Free memory was 102.0 MB in the beginning and 92.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-08-21 18:54:47,772 INFO L168 Benchmark]: Boogie Preprocessor took 102.08 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 92.6 MB in the beginning and 180.0 MB in the end (delta: -87.4 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-08-21 18:54:47,773 INFO L168 Benchmark]: RCFGBuilder took 244.95 ms. Allocated memory is still 201.3 MB. Free memory was 180.0 MB in the beginning and 167.7 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-08-21 18:54:47,774 INFO L168 Benchmark]: TraceAbstraction took 4076.96 ms. Allocated memory was 201.3 MB in the beginning and 281.5 MB in the end (delta: 80.2 MB). Free memory was 167.7 MB in the beginning and 236.2 MB in the end (delta: -68.5 MB). Peak memory consumption was 120.4 MB. Max. memory is 7.1 GB. [2020-08-21 18:54:47,777 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 261.21 ms. Allocated memory is still 138.9 MB. Free memory was 102.0 MB in the beginning and 92.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 102.08 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 92.6 MB in the beginning and 180.0 MB in the end (delta: -87.4 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 244.95 ms. Allocated memory is still 201.3 MB. Free memory was 180.0 MB in the beginning and 167.7 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4076.96 ms. Allocated memory was 201.3 MB in the beginning and 281.5 MB in the end (delta: 80.2 MB). Free memory was 167.7 MB in the beginning and 236.2 MB in the end (delta: -68.5 MB). Peak memory consumption was 120.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 34]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 9, TraceHistogramMax: 13, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 158 SDtfs, 139 SDslu, 543 SDs, 0 SdLazy, 734 SolverSat, 137 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 263 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 14 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 80 PreInvPairs, 99 NumberOfFragments, 39 HoareAnnotationTreeSize, 80 FomulaSimplifications, 291 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 215 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 415 NumberOfCodeBlocks, 415 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 406 ConstructedInterpolants, 0 QuantifiedInterpolants, 50421 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 550/894 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...