/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/jm2006_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:54:24,315 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-08-19 02:54:24,355 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:54:24,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:54:24,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:54:24,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:54:24,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:54:24,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:54:24,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:54:24,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:54:24,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:54:24,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:54:24,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:54:24,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:54:24,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:54:24,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:54:24,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:54:24,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:54:24,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:54:24,397 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:54:24,398 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:54:24,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:54:24,405 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 02:54:24,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:54:24,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:54:24,419 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:54:24,420 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 [2020-08-19 02:54:24,456 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:54:24,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:54:24,458 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:54:24,458 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:54:24,459 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:54:24,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:54:24,459 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:54:24,459 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:54:24,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:54:24,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:54:24,461 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:54:24,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:54:24,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:54:24,462 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:54:24,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:54:24,462 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:54:24,462 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:54:24,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:54:24,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:54:24,463 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:54:24,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:54:24,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:54:24,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:54:24,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:54:24,464 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:54:24,464 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:54:24,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:54:24,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:54:24,464 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:54:24,465 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=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:54:24,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:54:24,782 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:54:24,785 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:54:24,787 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:54:24,788 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:54:24,788 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006_variant.i [2020-08-19 02:54:24,849 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/607e7628a/9c5d098cbd264b0aaf8fc6a16b6fd689/FLAGcd21fb814 [2020-08-19 02:54:25,263 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:54:25,263 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/jm2006_variant.i [2020-08-19 02:54:25,268 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/607e7628a/9c5d098cbd264b0aaf8fc6a16b6fd689/FLAGcd21fb814 [2020-08-19 02:54:25,679 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/607e7628a/9c5d098cbd264b0aaf8fc6a16b6fd689 [2020-08-19 02:54:25,690 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:54:25,692 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:54:25,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:54:25,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:54:25,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:54:25,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:54:25" (1/1) ... [2020-08-19 02:54:25,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fbadd11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:54:25, skipping insertion in model container [2020-08-19 02:54:25,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:54:25" (1/1) ... [2020-08-19 02:54:25,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:54:25,733 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:54:25,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:54:25,910 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:54:25,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:54:25,940 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:54:25,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:54:25 WrapperNode [2020-08-19 02:54:25,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:54:25,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:54:25,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:54:25,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:54:25,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:54:25" (1/1) ... [2020-08-19 02:54:25,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:54:25" (1/1) ... [2020-08-19 02:54:26,041 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:54:25" (1/1) ... [2020-08-19 02:54:26,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:54:25" (1/1) ... [2020-08-19 02:54:26,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:54:25" (1/1) ... [2020-08-19 02:54:26,053 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:54:25" (1/1) ... [2020-08-19 02:54:26,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:54:25" (1/1) ... [2020-08-19 02:54:26,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:54:26,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:54:26,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:54:26,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:54:26,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:54:25" (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 [2020-08-19 02:54:26,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:54:26,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:54:26,122 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 02:54:26,122 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 02:54:26,122 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:54:26,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:54:26,122 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 02:54:26,123 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 02:54:26,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 02:54:26,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:54:26,124 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:54:26,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:54:26,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:54:26,338 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:54:26,338 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 02:54:26,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:54:26 BoogieIcfgContainer [2020-08-19 02:54:26,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:54:26,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:54:26,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:54:26,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:54:26,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:54:25" (1/3) ... [2020-08-19 02:54:26,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e82631a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:54:26, skipping insertion in model container [2020-08-19 02:54:26,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:54:25" (2/3) ... [2020-08-19 02:54:26,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e82631a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:54:26, skipping insertion in model container [2020-08-19 02:54:26,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:54:26" (3/3) ... [2020-08-19 02:54:26,351 INFO L109 eAbstractionObserver]: Analyzing ICFG jm2006_variant.i [2020-08-19 02:54:26,362 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:54:26,369 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:54:26,384 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:54:26,433 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:54:26,434 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:54:26,434 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:54:26,434 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:54:26,434 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:54:26,435 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:54:26,435 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:54:26,435 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:54:26,461 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-08-19 02:54:26,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-19 02:54:26,467 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:54:26,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:54:26,469 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:54:26,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:54:26,476 INFO L82 PathProgramCache]: Analyzing trace with hash -362650722, now seen corresponding path program 1 times [2020-08-19 02:54:26,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:54:26,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106076980] [2020-08-19 02:54:26,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:54:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:26,837 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 17 [2020-08-19 02:54:26,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:54:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:26,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:54:26,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106076980] [2020-08-19 02:54:26,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:54:26,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 02:54:26,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170478268] [2020-08-19 02:54:26,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 02:54:26,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:54:26,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 02:54:26,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:54:27,000 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 7 states. [2020-08-19 02:54:27,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:54:27,162 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2020-08-19 02:54:27,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 02:54:27,164 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-08-19 02:54:27,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:54:27,173 INFO L225 Difference]: With dead ends: 47 [2020-08-19 02:54:27,174 INFO L226 Difference]: Without dead ends: 15 [2020-08-19 02:54:27,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:54:27,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-08-19 02:54:27,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-08-19 02:54:27,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-08-19 02:54:27,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-08-19 02:54:27,219 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2020-08-19 02:54:27,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:54:27,219 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-08-19 02:54:27,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 02:54:27,220 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-08-19 02:54:27,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-19 02:54:27,221 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:54:27,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:54:27,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:54:27,222 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:54:27,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:54:27,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1126137131, now seen corresponding path program 1 times [2020-08-19 02:54:27,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:54:27,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542924902] [2020-08-19 02:54:27,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:54:27,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:27,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:54:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:27,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:54:27,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542924902] [2020-08-19 02:54:27,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:54:27,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-19 02:54:27,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358286622] [2020-08-19 02:54:27,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:54:27,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:54:27,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:54:27,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:54:27,432 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2020-08-19 02:54:27,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:54:27,543 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-08-19 02:54:27,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 02:54:27,543 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-08-19 02:54:27,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:54:27,544 INFO L225 Difference]: With dead ends: 22 [2020-08-19 02:54:27,545 INFO L226 Difference]: Without dead ends: 16 [2020-08-19 02:54:27,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:54:27,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-08-19 02:54:27,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-08-19 02:54:27,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-08-19 02:54:27,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-08-19 02:54:27,551 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2020-08-19 02:54:27,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:54:27,552 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-08-19 02:54:27,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:54:27,552 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-08-19 02:54:27,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-19 02:54:27,553 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:54:27,553 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:54:27,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:54:27,554 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:54:27,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:54:27,554 INFO L82 PathProgramCache]: Analyzing trace with hash 975587966, now seen corresponding path program 2 times [2020-08-19 02:54:27,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:54:27,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183922225] [2020-08-19 02:54:27,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:54:27,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:27,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:54:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:27,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:54:27,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183922225] [2020-08-19 02:54:27,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:54:27,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 02:54:27,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165648052] [2020-08-19 02:54:27,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:54:27,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:54:27,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:54:27,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:54:27,744 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 9 states. [2020-08-19 02:54:27,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:54:27,830 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-08-19 02:54:27,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 02:54:27,830 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-08-19 02:54:27,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:54:27,831 INFO L225 Difference]: With dead ends: 16 [2020-08-19 02:54:27,831 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 02:54:27,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:54:27,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 02:54:27,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 02:54:27,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 02:54:27,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 02:54:27,833 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-08-19 02:54:27,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:54:27,834 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 02:54:27,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:54:27,834 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 02:54:27,834 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 02:54:27,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:54:27,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 02:54:27,888 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-19 02:54:27,888 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 02:54:27,888 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 02:54:27,888 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 02:54:27,888 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 02:54:27,889 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 02:54:27,889 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-19 02:54:27,889 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-19 02:54:27,889 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-08-19 02:54:27,889 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-19 02:54:27,889 INFO L268 CegarLoopResult]: For program point L27(lines 27 29) no Hoare annotation was computed. [2020-08-19 02:54:27,890 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 31) no Hoare annotation was computed. [2020-08-19 02:54:27,890 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-08-19 02:54:27,890 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 31) no Hoare annotation was computed. [2020-08-19 02:54:27,890 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 31) the Hoare annotation is: true [2020-08-19 02:54:27,890 INFO L264 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (= (+ main_~y~0 main_~z~0) 0) [2020-08-19 02:54:27,891 INFO L264 CegarLoopResult]: At program point L22-2(lines 22 26) the Hoare annotation is: (let ((.cse1 (+ main_~x~0 main_~j~0)) (.cse0 (+ main_~i~0 main_~y~0 main_~z~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-08-19 02:54:27,891 INFO L268 CegarLoopResult]: For program point L22-3(lines 13 31) no Hoare annotation was computed. [2020-08-19 02:54:27,891 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-08-19 02:54:27,891 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-19 02:54:27,891 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-08-19 02:54:27,891 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-08-19 02:54:27,892 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-08-19 02:54:27,892 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-08-19 02:54:27,892 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-08-19 02:54:27,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 02:54:27 BoogieIcfgContainer [2020-08-19 02:54:27,911 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 02:54:27,914 INFO L168 Benchmark]: Toolchain (without parser) took 2221.44 ms. Allocated memory was 146.8 MB in the beginning and 235.9 MB in the end (delta: 89.1 MB). Free memory was 102.7 MB in the beginning and 157.2 MB in the end (delta: -54.5 MB). Peak memory consumption was 34.6 MB. Max. memory is 7.1 GB. [2020-08-19 02:54:27,915 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 02:54:27,916 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.34 ms. Allocated memory is still 146.8 MB. Free memory was 102.5 MB in the beginning and 92.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-08-19 02:54:27,917 INFO L168 Benchmark]: Boogie Preprocessor took 113.40 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 92.8 MB in the beginning and 181.0 MB in the end (delta: -88.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-08-19 02:54:27,918 INFO L168 Benchmark]: RCFGBuilder took 286.56 ms. Allocated memory is still 202.4 MB. Free memory was 180.4 MB in the beginning and 167.1 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-08-19 02:54:27,919 INFO L168 Benchmark]: TraceAbstraction took 1567.84 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 166.5 MB in the beginning and 157.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. [2020-08-19 02:54:27,924 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 246.34 ms. Allocated memory is still 146.8 MB. Free memory was 102.5 MB in the beginning and 92.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.40 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 92.8 MB in the beginning and 181.0 MB in the end (delta: -88.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 286.56 ms. Allocated memory is still 202.4 MB. Free memory was 180.4 MB in the beginning and 167.1 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1567.84 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 166.5 MB in the beginning and 157.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: i + y + z <= x + j && x + j <= i + y + z - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 25 SDslu, 152 SDs, 0 SdLazy, 104 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 15 NumberOfFragments, 27 HoareAnnotationTreeSize, 10 FomulaSimplifications, 73 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 46 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 3526 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 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...