/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-new/half.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:12:56,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:12:56,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:12:56,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 22:12:56,270 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 22:12:56,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 22:12:56,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 22:12:56,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 22:12:56,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 22:12:56,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 22:12:56,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 22:12:56,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 22:12:56,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 22:12:56,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 22:12:56,298 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 22:12:56,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 22:12:56,301 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 22:12:56,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 22:12:56,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 22:12:56,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 22:12:56,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 22:12:56,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 22:12:56,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 22:12:56,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 22:12:56,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 22:12:56,332 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 [2019-11-23 22:12:56,360 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:12:56,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:12:56,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 22:12:56,361 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 22:12:56,361 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 22:12:56,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:12:56,362 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:12:56,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:12:56,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:12:56,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:12:56,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:12:56,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:12:56,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:12:56,363 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 22:12:56,363 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:12:56,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:12:56,364 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 22:12:56,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:12:56,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:12:56,364 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 22:12:56,364 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:12:56,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:12:56,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:12:56,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:12:56,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:12:56,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:12:56,366 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 22:12:56,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:12:56,366 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:12:56,366 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:12:56,628 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:12:56,648 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:12:56,651 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:12:56,653 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:12:56,653 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:12:56,654 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/half.i [2019-11-23 22:12:56,723 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/552ee9874/e0b783280e4946d7848883fb046e6a58/FLAG95f72c7f6 [2019-11-23 22:12:57,126 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:12:57,127 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/half.i [2019-11-23 22:12:57,134 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/552ee9874/e0b783280e4946d7848883fb046e6a58/FLAG95f72c7f6 [2019-11-23 22:12:57,520 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/552ee9874/e0b783280e4946d7848883fb046e6a58 [2019-11-23 22:12:57,530 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:12:57,531 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:12:57,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:12:57,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:12:57,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:12:57,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:12:57" (1/1) ... [2019-11-23 22:12:57,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66c40c28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:12:57, skipping insertion in model container [2019-11-23 22:12:57,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:12:57" (1/1) ... [2019-11-23 22:12:57,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:12:57,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:12:57,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:12:57,732 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:12:57,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:12:57,756 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:12:57,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:12:57 WrapperNode [2019-11-23 22:12:57,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:12:57,757 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:12:57,757 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:12:57,757 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:12:57,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:12:57" (1/1) ... [2019-11-23 22:12:57,769 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:12:57" (1/1) ... [2019-11-23 22:12:57,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:12:57,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:12:57,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:12:57,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:12:57,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:12:57" (1/1) ... [2019-11-23 22:12:57,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:12:57" (1/1) ... [2019-11-23 22:12:57,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:12:57" (1/1) ... [2019-11-23 22:12:57,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:12:57" (1/1) ... [2019-11-23 22:12:57,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:12:57" (1/1) ... [2019-11-23 22:12:57,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:12:57" (1/1) ... [2019-11-23 22:12:57,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:12:57" (1/1) ... [2019-11-23 22:12:57,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:12:57,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:12:57,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:12:57,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:12:57,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:12:57" (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 [2019-11-23 22:12:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:12:57,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:12:58,165 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:12:58,166 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-23 22:12:58,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:12:58 BoogieIcfgContainer [2019-11-23 22:12:58,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:12:58,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:12:58,176 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:12:58,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:12:58,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:12:57" (1/3) ... [2019-11-23 22:12:58,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f4ee9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:12:58, skipping insertion in model container [2019-11-23 22:12:58,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:12:57" (2/3) ... [2019-11-23 22:12:58,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f4ee9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:12:58, skipping insertion in model container [2019-11-23 22:12:58,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:12:58" (3/3) ... [2019-11-23 22:12:58,191 INFO L109 eAbstractionObserver]: Analyzing ICFG half.i [2019-11-23 22:12:58,222 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:12:58,242 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 22:12:58,272 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 22:12:58,304 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:12:58,304 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:12:58,304 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:12:58,304 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:12:58,304 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:12:58,305 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:12:58,305 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:12:58,305 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:12:58,325 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-11-23 22:12:58,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-23 22:12:58,330 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:12:58,330 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-23 22:12:58,331 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:12:58,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:12:58,336 INFO L82 PathProgramCache]: Analyzing trace with hash 922384074, now seen corresponding path program 1 times [2019-11-23 22:12:58,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:12:58,344 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345829636] [2019-11-23 22:12:58,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:12:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:12:58,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:12:58,455 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345829636] [2019-11-23 22:12:58,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:12:58,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 22:12:58,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759313157] [2019-11-23 22:12:58,463 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-23 22:12:58,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:12:58,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-23 22:12:58,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-23 22:12:58,481 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2019-11-23 22:12:58,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:12:58,499 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2019-11-23 22:12:58,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-23 22:12:58,501 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-11-23 22:12:58,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:12:58,511 INFO L225 Difference]: With dead ends: 21 [2019-11-23 22:12:58,511 INFO L226 Difference]: Without dead ends: 9 [2019-11-23 22:12:58,515 INFO L630 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 [2019-11-23 22:12:58,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-23 22:12:58,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-23 22:12:58,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-23 22:12:58,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2019-11-23 22:12:58,554 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2019-11-23 22:12:58,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:12:58,555 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-11-23 22:12:58,555 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-23 22:12:58,555 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2019-11-23 22:12:58,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-23 22:12:58,555 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:12:58,556 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-23 22:12:58,556 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:12:58,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:12:58,557 INFO L82 PathProgramCache]: Analyzing trace with hash 922056373, now seen corresponding path program 1 times [2019-11-23 22:12:58,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:12:58,557 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270277432] [2019-11-23 22:12:58,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:12:58,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:12:58,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:12:58,835 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270277432] [2019-11-23 22:12:58,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:12:58,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-23 22:12:58,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381063992] [2019-11-23 22:12:58,837 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-23 22:12:58,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:12:58,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-23 22:12:58,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:12:58,839 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 6 states. [2019-11-23 22:12:58,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:12:58,990 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2019-11-23 22:12:58,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-23 22:12:58,991 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-11-23 22:12:58,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:12:58,993 INFO L225 Difference]: With dead ends: 23 [2019-11-23 22:12:58,994 INFO L226 Difference]: Without dead ends: 19 [2019-11-23 22:12:58,995 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-23 22:12:58,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-23 22:12:58,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 10. [2019-11-23 22:12:59,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-23 22:12:59,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-11-23 22:12:59,001 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2019-11-23 22:12:59,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:12:59,002 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-11-23 22:12:59,002 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-23 22:12:59,002 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-11-23 22:12:59,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-23 22:12:59,003 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:12:59,003 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:12:59,003 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:12:59,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:12:59,004 INFO L82 PathProgramCache]: Analyzing trace with hash -90418981, now seen corresponding path program 1 times [2019-11-23 22:12:59,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:12:59,005 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183588017] [2019-11-23 22:12:59,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:12:59,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:12:59,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:12:59,216 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183588017] [2019-11-23 22:12:59,216 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355620099] [2019-11-23 22:12:59,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:12:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:12:59,255 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-23 22:12:59,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:12:59,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:12:59,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:12:59,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2019-11-23 22:12:59,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895176816] [2019-11-23 22:12:59,402 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-23 22:12:59,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:12:59,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-23 22:12:59,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-11-23 22:12:59,406 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 13 states. [2019-11-23 22:12:59,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:12:59,593 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2019-11-23 22:12:59,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-23 22:12:59,594 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 9 [2019-11-23 22:12:59,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:12:59,595 INFO L225 Difference]: With dead ends: 23 [2019-11-23 22:12:59,595 INFO L226 Difference]: Without dead ends: 16 [2019-11-23 22:12:59,596 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2019-11-23 22:12:59,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-23 22:12:59,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 13. [2019-11-23 22:12:59,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-23 22:12:59,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2019-11-23 22:12:59,600 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2019-11-23 22:12:59,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:12:59,600 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-11-23 22:12:59,600 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-23 22:12:59,601 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2019-11-23 22:12:59,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-23 22:12:59,601 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:12:59,601 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-23 22:12:59,805 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:12:59,806 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:12:59,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:12:59,806 INFO L82 PathProgramCache]: Analyzing trace with hash 811629813, now seen corresponding path program 2 times [2019-11-23 22:12:59,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:12:59,807 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643207707] [2019-11-23 22:12:59,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:12:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:12:59,888 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:12:59,888 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643207707] [2019-11-23 22:12:59,889 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222848659] [2019-11-23 22:12:59,889 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:12:59,938 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 22:12:59,938 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:12:59,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-23 22:12:59,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:12:59,981 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:12:59,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:12:59,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-11-23 22:12:59,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163440973] [2019-11-23 22:12:59,986 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:12:59,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:12:59,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:12:59,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:12:59,987 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 4 states. [2019-11-23 22:13:00,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:13:00,022 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2019-11-23 22:13:00,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:13:00,022 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-23 22:13:00,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:13:00,023 INFO L225 Difference]: With dead ends: 22 [2019-11-23 22:13:00,023 INFO L226 Difference]: Without dead ends: 15 [2019-11-23 22:13:00,024 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:13:00,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-23 22:13:00,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-11-23 22:13:00,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-23 22:13:00,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-11-23 22:13:00,028 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12 [2019-11-23 22:13:00,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:13:00,028 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-11-23 22:13:00,028 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:13:00,028 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-11-23 22:13:00,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-23 22:13:00,029 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:13:00,029 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:13:00,237 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:13:00,238 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:13:00,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:13:00,239 INFO L82 PathProgramCache]: Analyzing trace with hash 868888115, now seen corresponding path program 1 times [2019-11-23 22:13:00,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:13:00,240 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686027077] [2019-11-23 22:13:00,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:13:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:13:00,487 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:13:00,487 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686027077] [2019-11-23 22:13:00,488 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629383165] [2019-11-23 22:13:00,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-11-23 22:13:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:13:00,514 WARN L253 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-23 22:13:00,515 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:13:00,682 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:13:00,708 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:13:00,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:13:00,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2019-11-23 22:13:00,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50838150] [2019-11-23 22:13:00,709 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-23 22:13:00,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:13:00,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-23 22:13:00,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2019-11-23 22:13:00,710 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 17 states. [2019-11-23 22:13:01,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:13:01,069 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2019-11-23 22:13:01,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-23 22:13:01,070 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 12 [2019-11-23 22:13:01,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:13:01,071 INFO L225 Difference]: With dead ends: 38 [2019-11-23 22:13:01,071 INFO L226 Difference]: Without dead ends: 27 [2019-11-23 22:13:01,072 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2019-11-23 22:13:01,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-23 22:13:01,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2019-11-23 22:13:01,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-23 22:13:01,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-11-23 22:13:01,079 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 12 [2019-11-23 22:13:01,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:13:01,079 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-11-23 22:13:01,080 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-23 22:13:01,080 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-11-23 22:13:01,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-23 22:13:01,081 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:13:01,081 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:13:01,281 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:13:01,282 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:13:01,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:13:01,283 INFO L82 PathProgramCache]: Analyzing trace with hash 816939165, now seen corresponding path program 2 times [2019-11-23 22:13:01,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:13:01,283 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491933145] [2019-11-23 22:13:01,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:13:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:13:01,551 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 22:13:01,552 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491933145] [2019-11-23 22:13:01,552 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706874417] [2019-11-23 22:13:01,552 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:13:01,578 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 22:13:01,578 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:13:01,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-23 22:13:01,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:13:01,821 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:13:01,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:13:01,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2019-11-23 22:13:01,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264643504] [2019-11-23 22:13:01,822 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-23 22:13:01,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:13:01,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-23 22:13:01,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2019-11-23 22:13:01,823 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 18 states. [2019-11-23 22:13:02,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:13:02,182 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2019-11-23 22:13:02,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-23 22:13:02,187 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 15 [2019-11-23 22:13:02,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:13:02,188 INFO L225 Difference]: With dead ends: 36 [2019-11-23 22:13:02,188 INFO L226 Difference]: Without dead ends: 26 [2019-11-23 22:13:02,189 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2019-11-23 22:13:02,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-23 22:13:02,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2019-11-23 22:13:02,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-23 22:13:02,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2019-11-23 22:13:02,194 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 15 [2019-11-23 22:13:02,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:13:02,194 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2019-11-23 22:13:02,194 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-23 22:13:02,194 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2019-11-23 22:13:02,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-23 22:13:02,195 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:13:02,195 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1] [2019-11-23 22:13:02,401 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:13:02,406 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:13:02,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:13:02,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1279408559, now seen corresponding path program 3 times [2019-11-23 22:13:02,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:13:02,407 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939562641] [2019-11-23 22:13:02,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:13:02,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:13:02,710 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-23 22:13:02,711 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939562641] [2019-11-23 22:13:02,711 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071839025] [2019-11-23 22:13:02,711 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:13:02,748 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-11-23 22:13:02,748 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:13:02,749 WARN L253 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 31 conjunts are in the unsatisfiable core [2019-11-23 22:13:02,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:13:03,070 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:13:03,096 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:13:03,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:13:03,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 16] total 25 [2019-11-23 22:13:03,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33595847] [2019-11-23 22:13:03,098 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-23 22:13:03,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:13:03,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-23 22:13:03,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2019-11-23 22:13:03,099 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 26 states. [2019-11-23 22:13:03,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:13:03,643 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2019-11-23 22:13:03,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-11-23 22:13:03,643 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 24 [2019-11-23 22:13:03,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:13:03,644 INFO L225 Difference]: With dead ends: 34 [2019-11-23 22:13:03,644 INFO L226 Difference]: Without dead ends: 0 [2019-11-23 22:13:03,645 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=181, Invalid=1009, Unknown=0, NotChecked=0, Total=1190 [2019-11-23 22:13:03,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-23 22:13:03,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-23 22:13:03,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-23 22:13:03,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-23 22:13:03,646 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2019-11-23 22:13:03,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:13:03,646 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-23 22:13:03,646 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-11-23 22:13:03,646 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-23 22:13:03,646 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-23 22:13:03,850 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:13:03,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-23 22:13:03,968 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-23 22:13:03,968 INFO L447 ceAbstractionStarter]: At program point L21(lines 10 22) the Hoare annotation is: true [2019-11-23 22:13:03,969 INFO L444 ceAbstractionStarter]: For program point L15-2(lines 15 19) no Hoare annotation was computed. [2019-11-23 22:13:03,969 INFO L440 ceAbstractionStarter]: At program point L15-3(lines 15 19) the Hoare annotation is: (let ((.cse0 (* 2 ULTIMATE.start_main_~n~0)) (.cse1 (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~k~0))) (or (and (<= .cse0 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 .cse0) .cse1) (and (<= ULTIMATE.start_main_~n~0 0) (<= 0 ULTIMATE.start_main_~n~0) (= ULTIMATE.start_main_~i~0 0)) (let ((.cse2 (+ ULTIMATE.start_main_~i~0 1))) (and (<= .cse0 .cse2) (<= .cse2 .cse0) .cse1)))) [2019-11-23 22:13:03,969 INFO L444 ceAbstractionStarter]: For program point L15-4(lines 15 19) no Hoare annotation was computed. [2019-11-23 22:13:03,969 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-23 22:13:03,969 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-23 22:13:03,969 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-23 22:13:03,970 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-23 22:13:03,970 INFO L444 ceAbstractionStarter]: For program point L16(lines 16 18) no Hoare annotation was computed. [2019-11-23 22:13:03,970 INFO L444 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2019-11-23 22:13:03,970 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-23 22:13:03,970 INFO L447 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2019-11-23 22:13:03,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:13:03 BoogieIcfgContainer [2019-11-23 22:13:03,984 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-23 22:13:03,987 INFO L168 Benchmark]: Toolchain (without parser) took 6454.50 ms. Allocated memory was 138.4 MB in the beginning and 272.6 MB in the end (delta: 134.2 MB). Free memory was 102.1 MB in the beginning and 207.1 MB in the end (delta: -105.0 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. [2019-11-23 22:13:03,987 INFO L168 Benchmark]: CDTParser took 1.40 ms. Allocated memory is still 138.4 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-11-23 22:13:03,988 INFO L168 Benchmark]: CACSL2BoogieTranslator took 224.72 ms. Allocated memory is still 138.4 MB. Free memory was 101.9 MB in the beginning and 92.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-11-23 22:13:03,989 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.05 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 92.4 MB in the beginning and 181.6 MB in the end (delta: -89.2 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2019-11-23 22:13:03,990 INFO L168 Benchmark]: Boogie Preprocessor took 21.10 ms. Allocated memory is still 202.4 MB. Free memory was 181.6 MB in the beginning and 179.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-11-23 22:13:03,991 INFO L168 Benchmark]: RCFGBuilder took 285.04 ms. Allocated memory is still 202.4 MB. Free memory was 179.9 MB in the beginning and 168.9 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2019-11-23 22:13:03,992 INFO L168 Benchmark]: TraceAbstraction took 5808.61 ms. Allocated memory was 202.4 MB in the beginning and 272.6 MB in the end (delta: 70.3 MB). Free memory was 168.9 MB in the beginning and 207.1 MB in the end (delta: -38.2 MB). Peak memory consumption was 32.1 MB. Max. memory is 7.1 GB. [2019-11-23 22:13:03,996 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.40 ms. Allocated memory is still 138.4 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 224.72 ms. Allocated memory is still 138.4 MB. Free memory was 101.9 MB in the beginning and 92.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 104.05 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 92.4 MB in the beginning and 181.6 MB in the end (delta: -89.2 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.10 ms. Allocated memory is still 202.4 MB. Free memory was 181.6 MB in the beginning and 179.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 285.04 ms. Allocated memory is still 202.4 MB. Free memory was 179.9 MB in the beginning and 168.9 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5808.61 ms. Allocated memory was 202.4 MB in the beginning and 272.6 MB in the end (delta: 70.3 MB). Free memory was 168.9 MB in the beginning and 207.1 MB in the end (delta: -38.2 MB). Peak memory consumption was 32.1 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: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: (((2 * n <= i && i <= 2 * n) && n <= k) || ((n <= 0 && 0 <= n) && i == 0)) || ((2 * n <= i + 1 && i + 1 <= 2 * n) && n <= k) - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Result: SAFE, OverallTime: 5.6s, OverallIterations: 7, TraceHistogramMax: 6, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 43 SDtfs, 101 SDslu, 87 SDs, 0 SdLazy, 757 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 41 SyntacticMatches, 9 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 19 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 14 NumberOfFragments, 45 HoareAnnotationTreeSize, 3 FomulaSimplifications, 104 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 147 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 156 NumberOfCodeBlocks, 156 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 22794 SizeOfPredicates, 17 NumberOfNonLiveVariables, 193 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 12 InterpolantComputations, 2 PerfectInterpolantSequences, 17/148 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...