java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-new/half.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 16:12:39,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 16:12:39,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 16:12:39,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 16:12:39,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 16:12:39,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 16:12:39,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 16:12:39,201 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 16:12:39,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 16:12:39,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 16:12:39,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 16:12:39,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 16:12:39,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 16:12:39,209 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 16:12:39,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 16:12:39,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 16:12:39,217 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 16:12:39,221 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 16:12:39,225 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 16:12:39,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 16:12:39,231 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 16:12:39,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 16:12:39,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 16:12:39,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 16:12:39,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-16 16:12:39,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 16:12:39,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 16:12:39,257 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 16:12:39,258 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-16 16:12:39,285 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 16:12:39,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 16:12:39,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-16 16:12:39,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-16 16:12:39,288 INFO L138 SettingsManager]: * Use SBE=true [2019-09-16 16:12:39,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 16:12:39,289 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 16:12:39,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-16 16:12:39,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 16:12:39,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 16:12:39,291 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 16:12:39,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 16:12:39,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 16:12:39,291 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 16:12:39,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 16:12:39,292 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-16 16:12:39,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 16:12:39,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 16:12:39,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 16:12:39,293 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-16 16:12:39,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-16 16:12:39,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 16:12:39,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 16:12:39,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 16:12:39,294 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-16 16:12:39,294 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-16 16:12:39,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 16:12:39,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-16 16:12:39,294 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 16:12:39,332 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 16:12:39,343 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 16:12:39,347 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 16:12:39,348 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 16:12:39,349 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 16:12:39,349 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/half.i [2019-09-16 16:12:39,411 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5c033030/6c190ebf7b374540805b1038dcbb18b0/FLAG33d834795 [2019-09-16 16:12:39,839 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 16:12:39,840 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/half.i [2019-09-16 16:12:39,846 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5c033030/6c190ebf7b374540805b1038dcbb18b0/FLAG33d834795 [2019-09-16 16:12:40,229 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5c033030/6c190ebf7b374540805b1038dcbb18b0 [2019-09-16 16:12:40,238 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 16:12:40,240 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 16:12:40,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 16:12:40,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 16:12:40,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 16:12:40,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 04:12:40" (1/1) ... [2019-09-16 16:12:40,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34409e34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:40, skipping insertion in model container [2019-09-16 16:12:40,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 04:12:40" (1/1) ... [2019-09-16 16:12:40,254 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 16:12:40,268 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 16:12:40,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 16:12:40,461 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 16:12:40,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 16:12:40,488 INFO L192 MainTranslator]: Completed translation [2019-09-16 16:12:40,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:40 WrapperNode [2019-09-16 16:12:40,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 16:12:40,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 16:12:40,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 16:12:40,489 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 16:12:40,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:40" (1/1) ... [2019-09-16 16:12:40,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:40" (1/1) ... [2019-09-16 16:12:40,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:40" (1/1) ... [2019-09-16 16:12:40,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:40" (1/1) ... [2019-09-16 16:12:40,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:40" (1/1) ... [2019-09-16 16:12:40,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:40" (1/1) ... [2019-09-16 16:12:40,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:40" (1/1) ... [2019-09-16 16:12:40,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 16:12:40,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 16:12:40,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 16:12:40,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 16:12:40,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 16:12:40,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 16:12:40,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 16:12:40,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-16 16:12:40,667 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 16:12:40,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 16:12:40,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-16 16:12:40,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-16 16:12:40,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 16:12:40,668 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 16:12:40,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 16:12:40,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 16:12:40,847 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 16:12:40,848 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-16 16:12:40,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 04:12:40 BoogieIcfgContainer [2019-09-16 16:12:40,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 16:12:40,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 16:12:40,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 16:12:40,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 16:12:40,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 04:12:40" (1/3) ... [2019-09-16 16:12:40,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13601175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 04:12:40, skipping insertion in model container [2019-09-16 16:12:40,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:40" (2/3) ... [2019-09-16 16:12:40,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13601175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 04:12:40, skipping insertion in model container [2019-09-16 16:12:40,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 04:12:40" (3/3) ... [2019-09-16 16:12:40,857 INFO L109 eAbstractionObserver]: Analyzing ICFG half.i [2019-09-16 16:12:40,867 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 16:12:40,875 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 16:12:40,892 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 16:12:40,940 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-16 16:12:40,941 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 16:12:40,942 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-16 16:12:40,942 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 16:12:40,942 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 16:12:40,942 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 16:12:40,943 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 16:12:40,943 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 16:12:40,943 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 16:12:40,965 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-09-16 16:12:40,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-16 16:12:40,972 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:12:40,972 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:12:40,975 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:12:40,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:12:40,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1995182865, now seen corresponding path program 1 times [2019-09-16 16:12:40,983 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:12:40,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:12:41,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:41,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:12:41,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:12:41,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:12:41,091 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:12:41,091 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 16:12:41,095 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 16:12:41,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 16:12:41,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 16:12:41,112 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-09-16 16:12:41,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:12:41,135 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2019-09-16 16:12:41,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 16:12:41,137 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-09-16 16:12:41,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:12:41,146 INFO L225 Difference]: With dead ends: 33 [2019-09-16 16:12:41,146 INFO L226 Difference]: Without dead ends: 14 [2019-09-16 16:12:41,150 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 16:12:41,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-09-16 16:12:41,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-09-16 16:12:41,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-09-16 16:12:41,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-09-16 16:12:41,195 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2019-09-16 16:12:41,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:12:41,196 INFO L475 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-09-16 16:12:41,196 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 16:12:41,196 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-09-16 16:12:41,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-16 16:12:41,197 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:12:41,198 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:12:41,198 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:12:41,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:12:41,199 INFO L82 PathProgramCache]: Analyzing trace with hash -2005341596, now seen corresponding path program 1 times [2019-09-16 16:12:41,199 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:12:41,199 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:12:41,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:41,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:12:41,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:41,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:12:41,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:12:41,424 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:12:41,424 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 16:12:41,426 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 16:12:41,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 16:12:41,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-16 16:12:41,427 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 7 states. [2019-09-16 16:12:41,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:12:41,600 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2019-09-16 16:12:41,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-16 16:12:41,601 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2019-09-16 16:12:41,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:12:41,605 INFO L225 Difference]: With dead ends: 26 [2019-09-16 16:12:41,605 INFO L226 Difference]: Without dead ends: 21 [2019-09-16 16:12:41,606 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-16 16:12:41,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-16 16:12:41,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2019-09-16 16:12:41,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-09-16 16:12:41,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-09-16 16:12:41,614 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2019-09-16 16:12:41,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:12:41,615 INFO L475 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-09-16 16:12:41,615 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 16:12:41,615 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-09-16 16:12:41,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-16 16:12:41,616 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:12:41,616 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:12:41,617 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:12:41,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:12:41,617 INFO L82 PathProgramCache]: Analyzing trace with hash -763628086, now seen corresponding path program 1 times [2019-09-16 16:12:41,617 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:12:41,618 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:12:41,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:41,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:12:41,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:12:41,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:12:41,881 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 16:12:41,881 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-16 16:12:41,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:12:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:12:41,916 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 9 conjunts are in the unsatisfiable core [2019-09-16 16:12:41,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:12:42,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:12:42,055 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-16 16:12:42,056 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 14 [2019-09-16 16:12:42,058 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-16 16:12:42,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-16 16:12:42,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2019-09-16 16:12:42,060 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 14 states. [2019-09-16 16:12:42,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:12:42,250 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2019-09-16 16:12:42,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-16 16:12:42,252 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2019-09-16 16:12:42,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:12:42,252 INFO L225 Difference]: With dead ends: 29 [2019-09-16 16:12:42,253 INFO L226 Difference]: Without dead ends: 21 [2019-09-16 16:12:42,254 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-09-16 16:12:42,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-16 16:12:42,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2019-09-16 16:12:42,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-09-16 16:12:42,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-09-16 16:12:42,262 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 14 [2019-09-16 16:12:42,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:12:42,262 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-09-16 16:12:42,263 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-16 16:12:42,263 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-09-16 16:12:42,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-16 16:12:42,263 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:12:42,264 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:12:42,264 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:12:42,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:12:42,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1429772124, now seen corresponding path program 2 times [2019-09-16 16:12:42,265 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:12:42,265 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:12:42,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:42,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:12:42,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:12:42,350 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:12:42,351 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 16:12:42,351 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-16 16:12:42,368 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-16 16:12:42,381 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-16 16:12:42,381 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-16 16:12:42,382 INFO L256 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-16 16:12:42,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:12:42,394 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:12:42,398 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-16 16:12:42,398 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-09-16 16:12:42,398 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-16 16:12:42,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-16 16:12:42,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 16:12:42,399 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 4 states. [2019-09-16 16:12:42,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:12:42,430 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2019-09-16 16:12:42,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-16 16:12:42,431 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-09-16 16:12:42,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:12:42,432 INFO L225 Difference]: With dead ends: 28 [2019-09-16 16:12:42,432 INFO L226 Difference]: Without dead ends: 20 [2019-09-16 16:12:42,432 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 16:12:42,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-09-16 16:12:42,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2019-09-16 16:12:42,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-09-16 16:12:42,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2019-09-16 16:12:42,437 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 17 [2019-09-16 16:12:42,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:12:42,437 INFO L475 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2019-09-16 16:12:42,437 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-16 16:12:42,438 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2019-09-16 16:12:42,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-16 16:12:42,438 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:12:42,439 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:12:42,439 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:12:42,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:12:42,439 INFO L82 PathProgramCache]: Analyzing trace with hash 345235238, now seen corresponding path program 1 times [2019-09-16 16:12:42,439 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:12:42,439 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:12:42,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:42,441 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-16 16:12:42,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:42,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:12:42,695 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:12:42,695 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 16:12:42,697 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-16 16:12:42,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-16 16:12:42,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:12:42,728 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 18 conjunts are in the unsatisfiable core [2019-09-16 16:12:42,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:12:42,906 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-16 16:12:42,954 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (4)] Exception during sending of exit command (exit): Broken pipe [2019-09-16 16:12:42,958 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-16 16:12:42,958 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2019-09-16 16:12:42,958 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-16 16:12:42,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-16 16:12:42,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2019-09-16 16:12:42,959 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 19 states. [2019-09-16 16:12:43,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:12:43,312 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2019-09-16 16:12:43,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-16 16:12:43,312 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 17 [2019-09-16 16:12:43,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:12:43,313 INFO L225 Difference]: With dead ends: 41 [2019-09-16 16:12:43,313 INFO L226 Difference]: Without dead ends: 29 [2019-09-16 16:12:43,314 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2019-09-16 16:12:43,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-09-16 16:12:43,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2019-09-16 16:12:43,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-09-16 16:12:43,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2019-09-16 16:12:43,320 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2019-09-16 16:12:43,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:12:43,320 INFO L475 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2019-09-16 16:12:43,320 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-16 16:12:43,321 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2019-09-16 16:12:43,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-16 16:12:43,321 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:12:43,322 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:12:43,322 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:12:43,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:12:43,322 INFO L82 PathProgramCache]: Analyzing trace with hash 124039624, now seen corresponding path program 2 times [2019-09-16 16:12:43,322 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:12:43,322 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:12:43,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:43,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:12:43,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:12:43,529 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-16 16:12:43,529 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 16:12:43,530 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-16 16:12:43,565 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-16 16:12:43,585 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-16 16:12:43,585 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-16 16:12:43,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-16 16:12:43,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:12:43,737 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:12:43,741 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-16 16:12:43,741 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2019-09-16 16:12:43,742 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-16 16:12:43,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-16 16:12:43,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2019-09-16 16:12:43,743 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 19 states. [2019-09-16 16:12:44,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:12:44,066 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2019-09-16 16:12:44,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-16 16:12:44,066 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 20 [2019-09-16 16:12:44,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:12:44,067 INFO L225 Difference]: With dead ends: 42 [2019-09-16 16:12:44,067 INFO L226 Difference]: Without dead ends: 31 [2019-09-16 16:12:44,068 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=605, Unknown=0, NotChecked=0, Total=702 [2019-09-16 16:12:44,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-09-16 16:12:44,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2019-09-16 16:12:44,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-09-16 16:12:44,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2019-09-16 16:12:44,073 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 20 [2019-09-16 16:12:44,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:12:44,074 INFO L475 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2019-09-16 16:12:44,074 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-16 16:12:44,074 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2019-09-16 16:12:44,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-09-16 16:12:44,075 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:12:44,075 INFO L407 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:12:44,075 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:12:44,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:12:44,076 INFO L82 PathProgramCache]: Analyzing trace with hash 45653034, now seen corresponding path program 3 times [2019-09-16 16:12:44,076 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:12:44,076 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:12:44,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:44,077 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-16 16:12:44,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:12:44,394 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-16 16:12:44,395 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 16:12:44,395 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-16 16:12:44,426 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-16 16:12:44,445 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-09-16 16:12:44,446 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-16 16:12:44,447 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 31 conjunts are in the unsatisfiable core [2019-09-16 16:12:44,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:12:44,813 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-16 16:12:44,868 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:12:44,871 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-16 16:12:44,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18] total 28 [2019-09-16 16:12:44,872 INFO L454 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-09-16 16:12:44,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-09-16 16:12:44,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=655, Unknown=0, NotChecked=0, Total=756 [2019-09-16 16:12:44,875 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 28 states. [2019-09-16 16:12:45,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:12:45,283 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2019-09-16 16:12:45,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-09-16 16:12:45,284 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 29 [2019-09-16 16:12:45,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:12:45,284 INFO L225 Difference]: With dead ends: 38 [2019-09-16 16:12:45,284 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 16:12:45,285 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=163, Invalid=1097, Unknown=0, NotChecked=0, Total=1260 [2019-09-16 16:12:45,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 16:12:45,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 16:12:45,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 16:12:45,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 16:12:45,286 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2019-09-16 16:12:45,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:12:45,286 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 16:12:45,287 INFO L476 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-09-16 16:12:45,287 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 16:12:45,287 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 16:12:45,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-16 16:12:45,435 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-16 16:12:45,436 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-16 16:12:45,436 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-16 16:12:45,436 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-16 16:12:45,436 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-16 16:12:45,436 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-16 16:12:45,436 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 22) the Hoare annotation is: true [2019-09-16 16:12:45,436 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 22) no Hoare annotation was computed. [2019-09-16 16:12:45,436 INFO L443 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2019-09-16 16:12:45,436 INFO L443 ceAbstractionStarter]: For program point L16(lines 16 18) no Hoare annotation was computed. [2019-09-16 16:12:45,437 INFO L443 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2019-09-16 16:12:45,437 INFO L443 ceAbstractionStarter]: For program point L15-2(lines 15 19) no Hoare annotation was computed. [2019-09-16 16:12:45,437 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 22) no Hoare annotation was computed. [2019-09-16 16:12:45,437 INFO L439 ceAbstractionStarter]: At program point L15-3(lines 15 19) the Hoare annotation is: (let ((.cse1 (* 2 main_~n~0)) (.cse2 (<= main_~n~0 main_~k~0))) (or (let ((.cse0 (+ main_~i~0 1))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) .cse2)) (and (<= 0 main_~n~0) (<= main_~n~0 0) (= main_~i~0 0)) (and (<= main_~i~0 .cse1) (<= .cse1 main_~i~0) .cse2))) [2019-09-16 16:12:45,437 INFO L439 ceAbstractionStarter]: At program point L15-4(lines 15 19) the Hoare annotation is: (let ((.cse0 (<= main_~k~0 main_~n~0))) (or (and (<= main_~n~0 0) .cse0) (and .cse0 (<= main_~n~0 main_~k~0)))) [2019-09-16 16:12:45,437 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-09-16 16:12:45,437 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-09-16 16:12:45,437 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-09-16 16:12:45,438 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-09-16 16:12:45,438 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-09-16 16:12:45,438 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-09-16 16:12:45,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 04:12:45 BoogieIcfgContainer [2019-09-16 16:12:45,450 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 16:12:45,454 INFO L168 Benchmark]: Toolchain (without parser) took 5212.78 ms. Allocated memory was 137.4 MB in the beginning and 261.1 MB in the end (delta: 123.7 MB). Free memory was 87.0 MB in the beginning and 97.5 MB in the end (delta: -10.5 MB). Peak memory consumption was 113.3 MB. Max. memory is 7.1 GB. [2019-09-16 16:12:45,455 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.4 MB. Free memory was 104.8 MB in the beginning and 104.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 16:12:45,455 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.29 ms. Allocated memory is still 137.4 MB. Free memory was 86.8 MB in the beginning and 77.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-09-16 16:12:45,456 INFO L168 Benchmark]: Boogie Preprocessor took 119.69 ms. Allocated memory was 137.4 MB in the beginning and 199.2 MB in the end (delta: 61.9 MB). Free memory was 77.4 MB in the beginning and 176.8 MB in the end (delta: -99.3 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. [2019-09-16 16:12:45,457 INFO L168 Benchmark]: RCFGBuilder took 240.36 ms. Allocated memory is still 199.2 MB. Free memory was 176.8 MB in the beginning and 164.9 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2019-09-16 16:12:45,458 INFO L168 Benchmark]: TraceAbstraction took 4600.35 ms. Allocated memory was 199.2 MB in the beginning and 261.1 MB in the end (delta: 61.9 MB). Free memory was 164.4 MB in the beginning and 97.5 MB in the end (delta: 66.9 MB). Peak memory consumption was 128.7 MB. Max. memory is 7.1 GB. [2019-09-16 16:12:45,462 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.4 MB. Free memory was 104.8 MB in the beginning and 104.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 248.29 ms. Allocated memory is still 137.4 MB. Free memory was 86.8 MB in the beginning and 77.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.69 ms. Allocated memory was 137.4 MB in the beginning and 199.2 MB in the end (delta: 61.9 MB). Free memory was 77.4 MB in the beginning and 176.8 MB in the end (delta: -99.3 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 240.36 ms. Allocated memory is still 199.2 MB. Free memory was 176.8 MB in the beginning and 164.9 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4600.35 ms. Allocated memory was 199.2 MB in the beginning and 261.1 MB in the end (delta: 61.9 MB). Free memory was 164.4 MB in the beginning and 97.5 MB in the end (delta: 66.9 MB). Peak memory consumption was 128.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 15]: Loop Invariant Derived loop invariant: (((i + 1 <= 2 * n && 2 * n <= i + 1) && n <= k) || ((0 <= n && n <= 0) && i == 0)) || ((i <= 2 * n && 2 * n <= i) && n <= k) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 4.5s OverallTime, 7 OverallIterations, 6 TraceHistogramMax, 1.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 80 SDtfs, 77 SDslu, 372 SDs, 0 SdLazy, 735 SolverSat, 54 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 182 GetRequests, 70 SyntacticMatches, 8 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 13 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 16 PreInvPairs, 30 NumberOfFragments, 63 HoareAnnotationTreeSize, 16 FomulaSimplifications, 121 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 202 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 216 NumberOfCodeBlocks, 216 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 204 ConstructedInterpolants, 0 QuantifiedInterpolants, 31022 SizeOfPredicates, 13 NumberOfNonLiveVariables, 243 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 12 InterpolantComputations, 2 PerfectInterpolantSequences, 17/148 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...